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ASTM A178 / ASME SA178 Electric Resistance Welded Carbon Steel Boiler Tubes

ASTM A178 Boiler and Superheater Tubes  for Electric-Resistance-Welded Carbon Steel and Carbon-Manganese Steel Boiler and Superheater Tubes.

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Description

ASTM A178 Boiler and Superheater Tubes  for Electric-Resistance-Welded Carbon Steel and Carbon-Manganese Steel Boiler and Superheater Tubes. ASTM A178, identical with ASME SA-178, is the standard specification covering minimum-wall-thickness, electric-resistance-welded tubes made of carbon steel and carbon-manganese steel intended for use as boiler tubes, boiler flues, superheater flues, and safe ends.

There are three grades available:

  • Grade A – low-carbon steel
  • Grade C – medium-carbon steel
  • Grade D – carbon-manganese steel

This standard is issued under the fixed designation A 178/A 178M; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon ( ε) indicates an editorial change since the last revision or reapproval. This specification has been approved for use by agencies of the Department of Defense. Consult the DoD Index of Specifications and Standards for specific year of issue which has been adopted by the Department of Defense.

These boilers have very good machinability; this reduces its machining costs. This alloy is resistive to corrosion in mild conditions. Moreover, these are resistive to pitting, crevice and stress corrosion cracking. These offer the best performance in elevated temperatures.

Chemical Requirements of ASTM A178

GradeCMnPSSi
Grade A
Low carbon steel
0.06-0.180.27-0.630.0350.035...
Grade C
Medium Carbon Steel
0.35 Max0.80 Max0.0350.035...
Grade D
Manganess Steel
0.27 Max1.00-1.500.030.0150.10 Min.

Chemical Composition

The steel shall conform to the requirements as to chemical composition prescribed in Table 1.

When a grade is ordered under this specification, sup- plying an alloy grade that specifically requires the addition of any element other than those listed in Table 1 is not permitted.

Product Analysis

1. When requested on the purchase order, a product analy- sis shall be made by the manufacturer or supplier from one tube per 100 pieces for sizes over 3 in. [76.2 mm] and one tube per 250 pieces for sizes 3 in. [76.2 mm] and under; or when tubes are identified by heat, one tube per heat shall be analyzed. The chemical composition thus determined shall conform to the requirements specified.

2. If the original test for product analysis fails, retests of two additional lengths of flat-rolled stock or tubes shall be made. Both retests, for the elements in question, shall meet the requirements of the specification; otherwise all remaining material in the heat or lot (Note 2) shall be rejected or, at the option of the producer, each length of flat-rolled stock or tube may be individually tested for acceptance. Lengths of flat- rolled stock or tubes which do not meet the requirements of the specifications shall be rejected.

Mechanical Properties of ASTM A178

GradeT.S.
ksi
[MPa]
Y.S.
ksi
[MPa]
EL. in 2"
min. %
Grade C60
[415]
37
[255]
30
Grade D70
[485]
40
[275]
30
*T.S.: tensile strength; *Y.S.: yield strength; *EL.: elongation.

Manufacture & Heat Treatment

The ASTM A178 Grade D steel shall be killed. ASTM A178 tubes shall be made by electric-resistance welding process. After welding, all tubes shall be heat treated at a temperature of 1650°F [900°C] or higher and followed by cooling in air or in the cooling chamber of a controlled-atmosphere furnace. Cold-drawn tubes shall be heat treated after the final cold-draw pass at a temperature of 1200°F [650°F] or higher.

Testing & Inspection

ERW tubes made from ASTM A178 steel may be tested or inspected in the following ways covering crush test, flattening test, flange test, tension test, reverse tension test, hydrostatic test, nondestructive electric test, dimension inspection, visual examination, as well as ultrasonic inspection.

NOTE 2—A lot consists of 250 tubes for sizes 3 in. [76.2 mm] and under and of 100 tubes for sizes over 3 in. [76.2 mm], prior to cutting to length.

Special precision welded process flow

special precision welded process flow

What are the Uses of ASTM A178 Boiler Pipes?

ASTM A178 Boiler Pipes are used in many applications, including boilers, fuel lines, heat exchangers, superheaters, condensers & feedwater pipes. These pipes are made from carbon steel and can resist temperatures up to about 750 degrees Fahrenheit without cracking or weakening. Due to their anti-corrosive properties, they are suitable for use in areas exposed to the elements and can last longer than other materials.

JIS Number and Corrensponding Foreign Standards

JIS ASTM BS DIN NF ISO Index Number
Standard Number Grade Tupe Standard
Number
Grade Tupe Standard
Number
Grade Tupe Standard
Number
Grade Tupe Standard Number Grade Tupe Standard Number Grade Tupe
G3461 STB340 C A161 LC C 3059 HFS320 C A49-245 TS34e C C010
(STB35) A192 C CFS320 C TS34c C
A226 C ERW320 C
A556 GrA2 C CEW320 C
A557 GrA2 C S1 360 C
S2 360 C
ERW 360 C
CEW360 C
3606 ERW320 C
CEW320 C
CFS320 C
STB410 C A179 GrC C 3059 S1 440 C 17175 St45.8 C A49-213 TU42c C 2604/2 TS9H C
(STB42) A210 GrA1 C S2 440 C 17177 St42.8 C A49-215 TU42c C TW9H C
A556 GrB2 C ERW 440 C A49-243 TS42c
A557 GrB2 C CEW 440 C A49-245 TS42c
3602 HFS 410 C TS42c
CFS 410 C
ERW 410 C
CEW 410 C
3606 ERW 440 C
CEW 440 C
CFS 440 C
STB510 C C 17175 19Mn5 C A49-213 TU52C C 2604/2 TS18 C
(STB52) C A49-248 TU52C C

Standard

Welded pipes specification and size

Product NameExecutive StandardDimension (mm)Steel Code / Steel Grade
Electric-Resistance-Welded Steel PipesASTM A13542.2-114.3 x 2.11-2.63A
Electric-Resistance-Welded Carbon Steel and Carbon-Manganese Steel Boiler and Superheater TubesASTM A17842.2-114.3 x 2.11-2.63A, C,D
ERW and Hot-dip Galvanized Steel PipesASTM A5321.3-273 x 2.11-12.7A, B
Pipes for Piling UsageASTM A252219.1-508 x 3.6-12.7Gr2, Gr3
Tubes for General Structural PurposeASTM A50021.3-273 x 2.11-12.7Carbon Steel
Square Pipes for General Structural PurposeASTM A50025 x 25-160 x 160 x 1.2-8.0Carbon Steel
Mechanical tubingASTM A51321.3-273 x 2.11-12.7carbon and alloy steel
Screwed and Socketed Steel TubesBS 138721.4-113.9 x 2-3.6Carbon Steel
Scaffolding PipesEN 3948.3 x 3.2-4Carbon Steel
Carbon Steel Tubes for General Structure PurposeJIS G344421.7-216.3 x 2.0-6.0Carbon Steel
Carbon Steel Tubes for Machine Structure PurposeJIS G3445 15-76 x 0.7-3.0STKM11A, STKM13A
Carbon Steel Pipes for Ordinary PipingJIS G345221.9-216.3 x 2.8-5.8Carbon Steel
Carbon Steel Pipes for Pressure ServiceJIS G345421.7-216.3 x 2.8-7.1Carbon Steel
Carbon Steel Rigid Steel ConduitsJIS G830521-113.4 x 1.2-3.5G16-G104, C19-C75, E19-E75
Carbon Steel Rectangular Pipes for General StructureJIS G346616 x 16-150 x 150 x 0.7-6Carbon Steel

Coating

Pipeline coating is the most consistent and successful solution for protecting ERW pipes from corrosion, from moisture, other harmful chemicals. Anti-corrosion steel pipe is processed through the preservation process, which can effectively prevent or slow down the process in the transport and use of chemical or electrochemical corrosion reaction of steel pipe. Therefore pipe anti-corrosion layer is an important barrier to prevent soil erosion. A well-known foreign scholar put forward” 3PE france protective layer”, so far, anti-corrosion methods is widely used. Coated pipes offer high resistance to corrosion on pipes and provide many benefits such as: 1. Increased Flow Capacity – A coating on pipes helps provide a smoother surface thus improving gas and liquid flow within pipes. 2. Reduced Cost – The pipeline coating increases the pipes durability so they can be deployed with minimum maintenance cost even in the harshest environments. 3. Lower energy usage – Various studies have shown that pipelines that are internally coated use less energy for pumping and compression of products through pipes. This helps in increased saving over time. 4. Clean delivery of products – The inhibitors used for the protection products can also be minimized by the use of coated pipes for delivery of products. Thus, coating of pipelines can help you in reducing your maintenance cost and at the same time providing a corrosion free reliable protection.

Basic functions of erw pipe coating

  1. making the surface of ERW steel pipes free from electrochemical corrosion of the soil medium, the basic physics of bacterial corrosion protection.
  2. resisting the move of the soil medium creep stress, static stress and abrasion force method and structure of the basic machinery protection.

The basic principles of urban gas pipeline coating selection:

  • good insulating and mechanical properties;
  • good resistance to cathodic disbondment performance;
  • good resistance to water, gas permeability;
  • good chemical resistance soaking performance and anti-aging properties;
  • resistance to low temperature and high temperature performance;
  • easy mending and mending;
  • at reasonable prices.

Types of coating:

Coating Specifications

2.1.External Coating 2.1.1 External Epoxy Coating

  • API RP 5L2 Recommended Practice for Internal Coating of Line Pipe for Non-Corrosive Gas Transmission Service.
  • CAN/CSA-Z245.20 Standard for External Fusion Bond Epoxy Coating for Steel Pipe
  • AS 3862 Standard Specification for External Fusion-Bonded Epoxy Coating for Steel Pipes
  • AWWA C210 Standard for Liquid-Epoxy Coating Systems for the Interior and Exterior of Steel Water Pipelines
  • AWWA C213 Standard for Fusion Bonded Epoxy Coating for the Interior and Exterior of Steel Water Pipelines.
  • DEP 31.40.30.32-Gen TECHNICAL SPECIFICATION FOR EXTERNAL FUSION-BONDED EPOXY POWDER COATINGFOR LINE PIPE
  • NFA 49-710 Standard Specification for External FBE layered Coating
  • ISO 21809-2:2007, Petroleum and natural gas industries-External coatings for buried or submerged pipelines used in pipeline transportation systems-Part 2:
  • Fusion-bonded epoxy coatings
  • NACE RP0394 – National Association of Corrosion Engineers Standard Recommended Practice, Application, Performance, and Quality Control of Plant Applied, Fusion Bonded Epoxy External Pipe Coating.
  • NACPA 12-78 – National Association of Pipe Coating Applicators External Application Procedure for Plant Applied fusion Bonded Epoxy (FBE) to Steel Pipe.
  • SAES-H-002 Internal and External Coatings for Steel Pipelines and Piping
  • 09-SAMSS-089 Shop-Applied External FBE Coating
  • 09-SAMSS-091 Shop-Applied Internal FBE Coatings

2.1.2 Polyethylene Coating

  • CAN/CSA Z245.21 External Polyethylene Coating for Pipe
  • DIN 30670 Polyethylene Sheathing of Steel Tubes and of Steel Shaped Fittings
  • NFA 49-710 External Three-Layer Polyethylene Based Coating, Application by Extrusion
  • DNV-RP-F106 Factory Applied External Pipeline Coatings For Corrosion Control
  • AS/NZS 1518 External Extruded High-Density Polyethylene Coating System for Pipes
  • ISO 21809-1 Petroleum and natural gas industries — External coatings for buried or submerged pipelines used in pipeline transportation systems – Part 1: Polyolefin coatings (3- layer PE and 3- layer PP)
  • ISO 21809-4:2009, Petroleum and natural gas industries -External coatings for buried or submerged pipelines used in pipeline transportation systems-Part 4: Polyethylene Coatings (2-layer PE)
  • DEP 31.40.30.31-Gen. TECHNICAL SPECIFICATION FOR EXTERNAL POLYETHYLENE AND POLYPROPYLENE COATING FOR LINE PIPE
  • IPS-G-TP-335 Material and Construction Standard for Three Layer Polyethylene Coating System
  • NFA 49-710 External 3 layer Polyethylene Coating
  • PETROBRAS’ ET-200.03 Engineering Specification (“Piping Materials for Production and Process Facilities”) for using low density linear polyethylene in carbon steel piping, as to appendix 13 of such specification.
  • 09-SAMSS-113 External Renovation Coating for Buried Pipelines and Piping (APCS-113)
  • UNI 9099-DIN 30670 Polyethylene Coating Applied by Extrusion

2.1.3 Polypropylene Coating

  • DIN30678 Polypropylene Sheathing of Steel Tubes and of Steel Shaped Fittings
  • EN 10286 Steel tubes and fittings for onshore and offshore pipelines –External three layer extruded polypropylene based coatings.
  • NFA 49-711 External Three-Layer Polypropylene Based Coating, Application by Extrusion
  • 09-SAMSS-114 Shop-Applied Extruded, Three-Layer Polypropylene External Coatings for Line Pipe

2.1.4 Polyurethane Coating

  • AWWA C222-99: Polyurethane Coatings for the Interior and Exterior of Steel Water Pipe and Fittings
  • BS 5493- Polyurethane Coating
  • DIN 30677.2 polyurethane Insulation of the fittings
  • EN 10290- External Liquid Applied Polyurethane Coatings

2.1.5 Polyolefin Coating

  • AWWA C225-03: Fused Polyolefin Coating Systems for the Exterior of Steel Water Pipelines
  • AWWA C215-99: Extruded Polyolefin Coatings for the Exterior of Steel Water Pipelines
  • AWWA C216-00 Standard for Heat-Shrinkable Cross-Linked Polyolefin Coatings for the Exterior of Special Sections, Connections, and Fitting for the Steel Water Pipelines
  • AWWA C224 – 01: Two-layer Nylon-11 Based Polyamide Coating System for Interior and Exterior of Steel Water Pipe and Fittings
  • AWWA C225 – 03: Fused Polyolefin Coating Systems for the Exterior of Steel Water Pipelines

2.1.6 Tape Coating

  • ISO 21809-3:2008, Petroleum and natural gas industries-External coatings for buried or submerged pipelines used in pipeline transportation systems-Part 3: Field joint coatings
  • AWWA C209-00: Standard for Cold-Applied Tape Coatings for the Exterior of Special Sections, Connections, and Fittings for Steel Water Pipelines
  • AWWA C214-00 Standard for Tape Coating Systems for the Exterior of the Steel Water Pipelines
  • AWWA C217-99 Standard for Cold-Applied Petrolatum Tape and Petroleum Wax Tape Coatings for the Exterior for Special Sections, Connections, and Fittings for Buried/Submerged Steel Water Pipelines
  • AWWA C218-02 Standard for Coating the Exterior of Aboveground Steel Water Pipelines and Fittings
  • AWWA C224-01: Two-layer Nylon-11 Based Polyamide Coating System for Interior and Exterior of Steel Water Pipe and Fittings
  • EN 12068 – DIN 30672 STANDARD-POLYETHYLENE SELF ADHESIVE TAPES

2.1.7 Bitumen Coating

  • DIN 30673 Bitumen coatings and linings for steel pipes, fittings and vessels.
  • BS 534

2.1.8 Coal-Tar Enamel Coating

  • AWWA C-203 Coal-Tar Protective Coatings and Linings for Steel Water Pipelines-Enamel and Tape-Hot-Applied
  • AWWA C205 Cement Mortar Protective Lining and Coating for Steel Water Pipe – 4 inch (100 mm) and Larger- Shop Applied
  • BS 534

2.1.9 Concrete Weighted Coating

  • DNV-OS-F101 Submarine Pipeline System
  • ASTM C171 Specification for Sheet Material for Coating Concrete
  • BS EN 12620 Aggregates for Concrete
  • ISO 21809-5:2009, Petroleum and natural gas industries -External coatings for buried or submerged pipelines used in pipeline transportation systems – Part

5:External concrete coating.

  • ASTM C42 Standard Test Method for Obtaining and Testing Drilled Cores and Sawed Beams of Concrete
  • ASTM C642 Standard Test Method for Specific Gravity, Absorption and Voids in Hardened Concrete
  • ASTM C87 Standard Test Method for Effect of Impurities in Fine Aggregate on Strength of Mortar BS 1881 Methods of Testing Concrete
  • BS 3148 Methods of Test for Water for Making Concrete
  • BS 4482 Hard Drawn Mild Steel Wire for the Reinforcement of Concrete
  • BS 4483 Specification for Steel Fabric for the Reinforcement of Concrete
  • BS 4449 Specification for Carbon Steel Bars for Reinforcement of Concrete
  • ISO 4012 Determination of Compressive Strength of Test Specimen

2.1.10 Marine Coating

  • EN ISO 12944:1998 – Paints & Varnishes – Corrosion Protection of Steel Structures by protective paint system (parts 1 – 8)
  • ISO 20340:2009 Paints and varnishes – Performance requirements for protective paint systems for offshore and related structures
  • ISO 15741 Paints and varnishes-Friction-reduction coatings for the interior of on- and offshore pipelines for non-corrosive gases

2.1.11 Other specification

  • British Gas BGC/PS/CM1,
  • BGC/PWS/CM2
  • GAZ de France R 09
  • NACE RP 0181
  • NF A 49-706
  • TS 5140
  • TS 5139

2.2. Lining 2.2.1 Epoxy Lining

  • AWWA C210: Liquid-Epoxy Coating Systems for the Interior and Exterior of Steel Water Pipelines
  • API RP512 or NFA 49-709 Internal can be epoxy 80 microns
  • TS EN 10289
  • NFA 49708 Recommended Practice for Internal Coating of Line Pipe

2.2.2 Bitumen Lining

  • DIN 30673 Bitumen coatings and linings for steel pipes, fittings and vessels
  • UNI-ISO 5256/87 STANDARD-BITUMEN COATING
  • BS 534

2.2.3 Cement Mortar Lining

  • AS/NZS 1516 Cement Mortar Lining of Pipelines In Situ
  • AWWA C203-02: Coal-Tar Protective Coatings & Linings for Steel Water Pipelines, Enamel & Tape, Hot-pap. (Incl. add. C203a-99)
  • AWWA C205-00: Cement-Mortar Protective Lining and Coating for Steel Water Pipe- 4 In. (100 mm) and Larger-Shop application
  • AWWA C602 Standard for Cement-Mortar Lining of Water Pipelines – 4 inch (100 mm) and Larger – In Place
  • BS 534

2.2.4 Shop Cement Lined Piping

  • AWWA C205,C104,C602
  • DIN 2614
  • British Standard BS 534
  • British Petroleum GS 106-1
  • Shell DEP 30.48.30.31-Gen.
  • Saudi Aramco 01-SAMSS-005
  • KNPC ENG STD 87C1
  • API RP 10E

Pipe Coating Products

  • Fusion Bonded Epoxy – Fusion Bond Epoxy is a powder epoxy thermosetting coating applied for anticorrosion protection to steel pipelines. The pipe is first blast cleaned and heated. Then epoxy powder is spray applied by electrostatic guns to melt and form a uniform layer that hardens within a minute from application. Utilizing industry accepted materials supplied by manufacturers such as 3M, DuPont, and Valspar, the facility can apply FBE in a wide range of thickness to cost effectively meet any project specifications.
  • Fusion Bonded Epoxy with Abrasion Resistance Overcoating (FBE/ARO) – Utilizing two completely separate powder systems, the facility can produce FBE with an ARO at unprecedented processing speeds using industry accepted materials such as 3M 6352, DuPont 7-2610, and Lilly 2040.
  • Fusion Bonded Epoxy with High Temperature Resistant Overcoating – Utilizing two completely separate powder systems, the facility can produce FBE with a high operating temperature resistant overcoating such as DuPont’s Nap-Gard Gold and 3M’s 6258.
  • Fusion Bonded Epoxy with Zap-Wrap Overcoating – The facility is capable of processing line pipe with connections and of applying the Zap-Wrap abrasion resistance overcoating to the ends of each pipe.

Three Layer Polyethylene (3LPE) To improve anticorrosion performance and adhesion, an additional layer of epoxy primer is sprayed onto pipe surfaces prior to the adhesive layer and Polyethylene top layer application. Three Layer Polyethylene is suitable for service temperatures from 60°C to 80°C (85°C peaks). Typical coating thickness is from 1-2 mm to 3-5 mm. Three Layer Polypropylene (3LPP) If a wider service temperature range and high stiffness is required, adhesive and top layers, applied over primer layer, are based on polypropylene instead of polyethylene. Three Layer Polypropylene is suitable for service temperatures up to 135 °C (140°C peaks). Typical coating thickness is from 1-2 mm to 3-5 mm. Three Layer Polypropylene and Polyethylene Three Layer applications involve a thermoplastic coating applied to steel pipelines as a form of anticorrosion protection. This mechanical resistance is appropriate when the risk of particularly severe coating damages exist. The Three Layer process involved several steps. First, the pipe surface is blast cleaned to remove any external residue from the mill or storage. It is then heated and sprayed with a Fusion Bond Epoxy (FBE) primer followed by the application of an adhesive copolymer and polyolefin polymers that are wrap extruded, one over the other. Field applied products

  • 3M: SK 134, SK6233, SK6352 Toughkote, SK 314, SK 323, SK 206N, SK 226N, SK 6251 DualKote SK-6171, SK 206P, SK226P,
  • 3M Internal Coatings: Coupon EP2306HP
  • DuPont: 7-2500, 7-2501, 7-2502, 7-2508, 7-2514, 7-2803, 7-2504 Nap Gard Gold 7-2504, Nap Rock: 7-2610, 7-2617 FBE Powders
  • DuPont: Repair Kits; 7-1631, 7-1677, 7-1862, 7-1851
  • DuPont Internal Coatings: 7-0008, 7-0010, 7-0014, 7-0009SGR, 7-0009LGR, 7-2530, 7-2534, 7-2509
  • Akzo Nobel: FBE – Fusion Bond Epoxy
  • Internline 876 Seal Coat
  • Hampel: 85448,97840
  • Denso: 7200, 7900 High Service Temperature Coatings
  • Internal Liquid Epoxy: Powercrete Superflow

Delivery

FAQs

Advantage of ERW pipe
The alloy content of the coil is often lower than similar grades of steel plate, improving the weldability of the spiral welded pipe. Due to the rolling direction of spiral welded pipe coil is not perpendicular to the pipe axis direction, the crack resistance of the spiral welded pipe materials.

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FAQ

Q: How long is your delivery time? A: The delivery time of customized products is generally 25 35 days, and non customized products are generally shipped within 24 hours after payment. Q: Do you provide samples? Is it free? A: If the value of the sample is low, we will provide it for free, but the freight needs to be paid by the customer. But for some high value samples, we need to charge a fee. Q: What are your payment terms? A: T/T 30% as the deposit,The balance payment is paid in full before shipment Q: What is the packaging and transportation form? A: Non steaming wooden box and iron frame packaging. Special packaging is available according to customer needs. The transportation is mainly by sea. Q: What is your minimum order quantity? A: There is no minimum order quantity requirement. Customized products are tailor made according to the drawings provided by the customer.