Seamless carbon steel pipe for specified pressure, temperature and mechanical service. Common reference: ASTM A106 and ASTM A53 Type S.
Global Steel Supply & Processing
SEAMLESS · ERW · LSAW · SSAW · WELDED PIPE
Choose the pipe material and product form that match your project specification.
Seamless, ERW, LSAW and SSAW pipe for structural, mechanical, fluid and line-pipe specifications.
Seamless and welded stainless pipe in common austenitic grades for process, equipment and corrosion-service requirements.
Hot-dip galvanized steel pipe for water, utility, building and specified fire-protection systems.
Separate structural tube range in square and rectangular hollow sections for fabrication and construction.
Your carbon steel pipe enquiry can specify the manufacturing route, grade, dimensions and inspection scope.
Seamless carbon steel pipe for specified pressure, temperature and mechanical service. Common reference: ASTM A106 and ASTM A53 Type S.
Electric-resistance-welded pipe with a longitudinal weld seam for the ordered standard, grade and application.
Longitudinal submerged-arc-welded pipe for specified large-diameter line-pipe and structural projects.
Spiral submerged-arc-welded pipe for selected large-diameter pipeline and water-transmission requirements.
The product standard determines material grades, dimensions, manufacturing route, testing and documentation.
| Product range | Common standard reference | Scope / purchasing note |
|---|---|---|
| Carbon Steel Pipe | ASTM A53/A53M-24 | Black and hot-dip galvanized welded or seamless pipe for mechanical and pressure applications. |
| Seamless Carbon Steel Pipe | ASTM A106/A106M-26 | Seamless carbon steel pipe for high-temperature service; Grades A, B and C as specified. |
| Oil & Gas Line Pipe | API Specification 5L, 47th Edition (2026) | Seamless and welded line pipe for pipeline transportation systems; PSL 1 / PSL 2 as ordered. |
| Stainless Steel Pipe | ASTM A312/A312M-25 | Seamless, straight-seam welded and heavily cold-worked austenitic stainless pipe. |
| Galvanized Steel Pipe | ASTM A53/A53M-24 | Hot-dip zinc-coated welded or seamless pipe where this specification is selected. |
| Fire Protection Pipe | ASTM A795/A795M-21 | Black and hot-dip galvanized welded or seamless pipe intended for fire-protection systems. |
| Square & Rectangular Tube | ASTM A500/A500M-23 | Cold-formed welded and seamless carbon steel structural tubing in round and shaped sections. |
The standards above are product references, not a single combined specification. Select the standard and edition required by your project and purchase order.
A complete dimensional schedule helps align pipe supply, weight, end preparation and shipment planning.
| Nominal size | NPS / DN or outside diameter in millimetres |
|---|---|
| Outside diameter | Exact OD as required by the selected dimensional standard |
| Wall thickness | Nominal wall thickness or Schedule, such as SCH 10 / 40 / 80 where applicable |
| Pipe length | Random length, fixed length or project cut length |
| Pipe ends | Plain end, bevelled end, threaded end or grooved end as specified |
| Material grade | ASTM / API / EN / GB grade and standard edition |
| Surface / coating | Black, pickled, galvanized or specified external / internal coating |
| Inspection | MTC, hydrostatic test, NDT, dimensional and coating inspection as ordered |
Send the following details for a project-specific quotation.
Your operating medium, pressure, temperature, corrosion conditions and joining method guide the material selection.
Line pipe specified to API 5L with the required grade, PSL, dimensions and project testing.
Carbon or galvanized pipe selected for water distribution, utility networks and site services.
Carbon or stainless pipe for process lines, plant equipment and mechanical services.
Seamless carbon steel pipe for specified high-temperature and utility piping systems.
Steel pipe and separate structural hollow sections for frames, supports and fabrication.
Galvanized or black pipe ordered to the fire-protection standard and project approval requirements.
Specify the pipe process and product acceptance requirements with your project schedule.
Seamless and welded pipe have different manufacturing routes and applicable product specifications. Identify the route required by your engineering standard, grade and service conditions.
Our company-wide steel production, inventory and export operations support bulk purchasing and scheduled project supply.
Actual annual steel production across our company product range.
Company-wide steel inventory supports supply planning; confirm pipe grade, size and finish for each RFQ.
Industrial facilities support manufacturing operations, material handling and order coordination.
Teams support production, inspection, sales coordination and export orders.
Specify the material documents and tests required by the product standard and project specification.
Define the required checks for the supplied pipe size, grade and delivery condition.
Testing is arranged to the selected standard and agreed inspection plan.
Estimate the theoretical mass of round steel pipe using outside diameter, wall thickness, length and quantity.
Theoretical estimate based on a uniform circular wall section. Actual mass depends on specified tolerances, material density and pipe end details.
For an accurate quotation, include all sizes and grades in your project list.
Include the required pipe-end details and finished dimensions in your enquiry.
Specify fixed lengths, cut tolerances and quantity by size.
Define bevel angle, root face and end protection where required for welding.
Specify thread type, groove dimensions and applicable connection standard.
Attach your pipe schedule or drawing to request a combined material and processing quotation.
Send your pipe schedule, required standard, quantity and destination. Our team will confirm the grade-specific supply arrangement, packing details and shipment schedule for your order.
Specify pipe length, bundle weight, end protection, coating protection and destination handling requirements with your order.
Keep your pipe, tube and structural steel purchasing requirements connected.
The carbon steel pipe range includes seamless, ERW, LSAW and SSAW supply forms. Specify the applicable product standard, grade, dimensions and manufacturing route in your RFQ.
Common references include ASTM A53/A53M for black and galvanized welded or seamless pipe, ASTM A106/A106M for seamless high-temperature pipe, and API Specification 5L for line pipe.
Provide NPS or DN, outside diameter, wall thickness or Schedule, length, pipe ends, grade, standard and quantity.
Yes. List each material grade, standard, dimensions, surface or coating requirement and quantity separately in the same purchase schedule.
Specify MTC, heat traceability, dimensional inspection, hydrostatic or NDT requirements, PMI for stainless grades and coating checks for galvanized pipe.
Square and rectangular structural tubes have a separate product page so their hollow-section dimensions and structural specifications can be presented independently.
Send your required grade, dimensions, quantity and destination. Our team will review the inquiry.