01
ASTM A53 / A53M
Pipe, steel, black and hot-dipped zinc-coated
Standard specification for pipe, steel, black and hot-dipped, zinc-coated, welded and seamless.
Carbon Steel — Industrial Product
Welded Steel Pipe
Welded carbon steel pipe supplied to ASTM A53 / ASTM A106 / API 5L for fluid conveyance, structural and general industrial applications.
Indicative priceUSD 580 - 780 / MT
Lead time15 - 25 working days
01
Overview
Welded Steel Pipe combines low-carbon carbon steel with a continuous longitudinal weld for reliable mechanical performance and cost-effective dimensional control. The welded construction delivers consistent wall thickness and good formability, making the pipe suited to fluid conveyance, low-pressure service, structural framing, fencing and general industrial applications. Supplied to ASTM A53 / ASTM A106 / API 5L with mill test certification per EN 10204 3.1, it supports global procurement where seamless pipe is not required by service conditions.
Key Characteristics
- 01 High Strength Provides high mechanical strength for demanding structural and industrial applications.
- 02 Good Toughness Provides good toughness and resistance to brittle fracture.
- 03 Good Weldability Supports welding using suitable procedures and compatible filler materials.
- 04 Good Formability Supports bending, forming and other fabrication processes with suitable processing conditions.
- 05 Standard Compliance Manufactured and supplied in accordance with the specified material and product standards.
- 06 Third-Party Inspection Third-party inspection can be arranged according to project and procurement requirements.
Typical Applications
- Oil & Gas Service Process piping, flow lines and utility systems across onshore and offshore upstream, midstream and downstream operations.
- Building & Structural Structural and architectural components for commercial, industrial and high-rise buildings.
- Petrochemical Piping, process systems and equipment for refining, petrochemical production and hydrocarbon processing.
- Boiler Tubes Water-wall, superheater and economizer tubes for utility and industrial boilers.
- Machinery & Equipment Shafts, gears, housings, frames and other components for industrial machinery and OEM equipment.
02
Specifications
Numbers in this section correspond to the applicable product standard, formatted for direct use in enquiry and approval documents.
Product specification
- Material
- Carbon steel
- Grade
- A36 / S235JR / SS400
- UNS designation
- K02600
- Product form
- Pipe / tube
- Manufacturing method
- Welded
- Surface / condition
- Mill finish
- Cross-section
- Hollow circular, uniform wall thickness
Supply specifications
- Outside diameter
- 6 - 630 mm
- Wall thickness
- 0.5 - 40 mm
- Length
- 3 - 12 m; custom lengths on request
- Schedule range
- Sch 5S through XXS
- Tolerance
- According to ASTM A312 / ASME B36.19
- Surface finish
- Mill finish; pickled on request
- Marking
- Standard mill marking; customer marking on request
Final supply is confirmed against the project drawing, purchase agreement and the mill test certificate.
Chemical composition
ElementRequirement
C <= 0.25 %
Si <= 0.40 %
Mn <= 1.50 %
P <= 0.040 %
S <= 0.050 %
Fe Balance
Reference: applicable standard Carbon Steel.
Mechanical properties
PropertyRequirement
Tensile strength 400 - 550 MPa
Yield strength (0.2% offset) >= 250 MPa
Elongation in 50 mm >= 23 %
Hardness <= 160 HB
Reference: applicable standard Carbon Steel at room temperature.
Physical properties
PropertyTypical Value
Density 7.85 g/cm³
Elastic modulus 200 GPa
Thermal conductivity 50 W/m·K at 100°C
Electrical resistivity 0.17 μΩ·m
Specific heat 490 J/kg·K
Melting range 1,450 - 1,530 °C
Thermal expansion 11.6 x 10⁻⁶ /°C
Reference: Typical material values, Carbon Steel.
Reference framework
Standards & documentation
The applicable product, dimensional and inspection standards should be confirmed together in the purchase specification.
02
ASTM A135 / A135M
Electric-resistance-welded steel pipe
Standard specification for electric-resistance-welded steel pipe for high-pressure and ordinary service.
03
API 5L
Line pipe
API specification for line pipe for use in pipeline transportation systems in the petroleum and natural gas industries.
04
ASME B36.10M
Welded and seamless wrought steel pipe
Dimensional reference for nominal pipe size, outside diameter and wall thickness.
05
EN 10217-1
Welded steel tubes for pressure purposes
European reference for welded non-alloy steel tubes with specified room temperature properties.
06
EN 10204
Inspection documents
Defines inspection document types such as 3.1 and 3.2 for metallic product delivery.
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Capability
From custom dimensions and precision sizing to heat treatment, surface finishing and product-specific processing, Wayland coordinates supply solutions tailored to your requirements.
Cutting
Cut-to-length and custom cutting according to order requirements.
Custom Dimensions
Non-standard dimensions, tolerances and dimensional combinations subject to product and mill capability.
Precision Sizing
Precision sizing and dimensional control for tighter tolerance requirements.
Cold Working
Cold drawing, cold sizing and other cold-working processes where required.
Heat Treatment
Heat treatment according to material, specification and applicable standard.
Surface Finishing
Surface treatment and finishing according to product, specification and application requirements.
Forming
Bending, forming and other shape modification according to drawings or order requirements.
End Preparation
Beveling, threading, chamfering and other end preparation according to product requirements.
Welding & Fabrication
Welding, fabrication and related assembly according to drawings and project requirements.
Customization
Custom dimensions, lengths, surface conditions, end preparations and inspection requirements can be supplied according to project specifications. Final capability is confirmed per enquiry based on grade, size range and applicable standard.
04
Quality
Inspection and documentation procedures are coordinated to meet the requirements of the applicable product standard and the project specification.
- Dimensional inspection Geometry, dimensions and tolerances against the applicable standard
- Visual and surface inspection Surface condition, marking and overall appearance
Documents
- Inspection Report
- Chemical analysis Per heat, against the applicable standard
- Mechanical testing Tensile, yield, elongation and hardness
- Non-destructive testing UT, eddy-current, hydrostatic or other NDT as applicable
- Positive material identification PMI for alloy verification when required
Documents
- Mill Test Certificate (MTC)
- Heat number traceability Heat number carried through MTC and product marking
- Third-party inspection coordination SGS / BV / TÜV on request
Documents
- Third-Party Inspection Report
- EN 10204 documentation 3.1 MTC standard; 3.2 on request
Documents
- EN 10204 3.1 Mill Test Certificate
- EN 10204 3.2 Inspection Certificate
- Certificate of Origin
05
Selection
A well-prepared specification is the most efficient defence against clarification cycles.
- 01 Select material & grade
Choose the material grade according to service conditions, performance requirements and applicable standards.
- 02 Define size & supply condition
Specify the required dimensions, surface condition, heat-treatment condition and delivery requirements.
- 03 Confirm standard & requirements
State the applicable product standard, dimensional standard and governing project specification.
- 04 Define inspection & documentation
Confirm inspection, testing, certification and documentation requirements before order placement.
Example procurement specification
A complete specification suitable for enquiry, covering product, technical requirements, certification and delivery terms.
- Product
- Welded Steel Pipe
- Grade
- A36
- Standard
- ASTM A53
- Dimensions
- OD 88.9 mm × WT 5.49 mm × Length 6000 mm (NPS 3, Sch 40S)
- Condition
- Solution Annealed & Pickled; Plain Ends
- Certification
- EN 10204 3.1 Mill Test Certificate
- Quantity
- 20 Metric Tons
- Packaging
- Seaworthy Export Packing
- Incoterm
- CIF Hamburg
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Logistics
From mill dispatch to destination port, each stage is coordinated with the nominated forwarder and documented against the purchase specification.
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Packaging
Export-suitable packaging with surface and edge protection.
Bundled, wrapped or crated according to product form and transport mode. Outer surface protected with weather-resistant material; ends and edges shielded against transit damage.
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Loading
FCL container for standard sizes; break bulk for oversized cargo.
Container loading via nominated forwarder. LCL and dimensions outside container allowance coordinated against the mill dispatch schedule.
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Documentation
Commercial invoice, packing list and certificate of origin.
Mill documentation travels with the shipment. EN 10204 3.1 / 3.2 certificates and third-party inspection reports provided as per purchase specification.
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Shipment
Sea freight as standard; alternative routes on request.
FCL / LCL container shipment or break bulk for oversized dimensions. Logistics coordinated through the nominated forwarder.
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Delivery
FOB · CFR · CIF · FCA · EXW arrangements available.
Incoterm 2020. Port of loading: Shanghai / Ningbo / Shenzhen. Final destination and terms confirmed per enquiry.
07
FAQ
Most enquiries reduce to a small set of recurring technical questions.
01 What is welded carbon steel pipe?
Welded carbon pipe is produced by forming steel strip or plate into a cylindrical shape and joining the seam by ERW (electric-resistance-welding) or LSAW (longitudinal submerged-arc-welding).
02 What is the difference between ERW and seamless?
ERW pipe has a longitudinal weld seam produced by electric-resistance heating. Seamless pipe has no seam and is preferred for higher-pressure and higher-temperature service.
03 Is welded pipe suitable for high-pressure service?
Welded pipe to ASTM A53 / API 5L is widely used for low to moderate pressure service. For high-pressure service, seamless or DSAW pipe is preferred.
04 Can welded pipe be hot-dip galvanized?
Yes. Hot-dip galvanizing is commonly applied to welded pipe for corrosion protection. Internal galvanizing is not generally performed.
05 What testing is performed on welded pipe?
Hydrostatic test, flattening test, chemical / mechanical tests per ASTM A53. NDT such as UT or RT for the weld seam is available on request.