A106 Gr.B class A53 seamless class ASTM A106 ASTM A53 (seamless)

Seamless Steel Pipe

Seamless carbon steel pipe for pressure, process, and export line packages where a welded seam is not accepted. Confirm standard/grade, OD, wall, ends, NDT, and packing before quotation with Tsingshan Steel (Shandong).

MOQ: Typically 1 container
Lead time: 7-21 working days after confirmation
Origin: China
Monthly supply: 5,000+ metric tons per month
Standards: ASTM A106, ASTM A53 (seamless), EN 10216 (project), EN 10216 +1
Packing: Export seaworthy packing with traceable bundle labels and loading photos.

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PRODUCT TECHNICAL SPECIFICATION PLATE ORDER-SPECIFIC DATA

TECHNICAL METRICS

Standards: ASTM A106 / A53 seamless / EN 10216 as PO
Size: OD × WT or schedule per drawing

LOGISTICS & DISPATCH

MOQ: Typically 1 container
Lead time: 7-21 working days after confirmation
Origin: China
Monthly supply: 5,000+ metric tons per month

Full specifications

Full specifications
Property	Value
Product form	Seamless carbon steel pipe
Route	Seamless (not ERW) as ordered
Standards	ASTM A106 / A53 seamless / EN 10216 as PO
Size	OD × WT or schedule per drawing
Ends	Plain / bevel / threaded per PO
Tests	Hydro / NDT scope per PO and standard
Documents	MTC EN 10204 3.1 with heat traceability
Export packing	End caps, strapping, seaworthy bundles

Overview

Seamless Steel Pipe is selected when the project requires a seamless manufacturing route for pressure, mechanical, or higher-integrity transfer lines rather than ERW/welded alternatives. Buyers should lock OD × wall thickness (or schedule), grade and standard family (for example ASTM A106 / A53 seamless class, EN 10216, or project equivalent), end finish (plain, bevel, threaded when specified), length, heat treatment condition if required, hydrostatic and NDT scope, and EN 10204 3.1 heat-lot MTC. State service (pressure vs structural) clearly so the mill route and test plan match the PO. Share quantity, destination port, packing (end caps and bundles), and third-party inspection needs for a practical export pipe quotation.

Applications

Process and utility pressure lines
Mechanical and hydraulic tubing duty when specified
Boiler and high-temperature lines (grade-dependent)
Export project piping spools

RFQ documents & delivery

Packing, MTC, and inspection path — include them in your RFQ for an actionable quote.

Packing & delivery

Order-specific packing

Export seaworthy packing with traceable bundle labels and loading photos.

Quality assurance

Documents as ordered

Mill certificate, inspection support, and shipment documentation can be coordinated before loading as ordered.

Supply confidence

Stock, inspection, and product uses

Fixed delivery proof plus this product’s applications — confirm stock, inspection, and end use before RFQ.

Steel bundles staged by lot in the warehouse

Warehouse & staged stock

Strapped coils and plates staged by lot so grade, thickness, and destination port can be matched quickly for shipment.

Factory capability Ask stock & lead time

Buyer verifying thickness and specs on site

Buyer visits & inspection

Overseas buyers and third-party inspectors are welcome to verify specs, heat numbers, and packing. SGS/BV support available.

Quality & standards Arrange inspection

Steel used in oil, gas, and pipeline work

Typical applications for this product

Typical uses for this product: Process and utility pressure lines; Mechanical and hydraulic tubing duty when specified; Boiler and high-temperature lines (grade-dependent). Share your end use, environment, and packing needs in the RFQ.

View oil & gas Quote for this use case

FAQ

What should I confirm before ordering seamless steel pipe?

Confirm standard and grade, outside diameter, wall thickness or schedule, length, end finish, coating, quantity, destination port, packing method, NDT/hydro scope, and whether EN 10204 3.1 MTC or third-party inspection is required.

When is seamless preferred over ERW steel pipe?

Seamless is typically preferred for higher pressure, elevated temperature, critical process service, or specifications that explicitly require seamless. ERW may be acceptable for structural and general service when the standard allows welded pipe. Share design code and service conditions for a practical recommendation.

What export documents can ship with seamless steel pipe?

We can coordinate mill test certificates (typically EN 10204 3.1), packing lists, commercial invoice support, heat or pipe identification, loading photos, and optional SGS, BV, or Intertek inspection before shipment.

Request a quote for Seamless Steel Pipe

Send grade, size, quantity, and destination port for a practical export quotation.

Request Technical Quote WhatsApp for urgent specs

Web RFQ: formal quote + document path
WhatsApp: fast confirm for urgent specs