Name: China API Spec 5L 406.4×10.31 X52M PSL2 Manufacturers Suppliers Factory - Huayang Steel Pipe
Brand: Huayang
SKU: 299599458

Hebei Huayang Steel Pipe Co., Ltd is one of the most experienced manufacturers and suppliers of api spec 5l 406.4×10.31 x52m psl2 in China. Welcome to buy discount api spec 5l 406.4×10.31 x52m psl2 made in China here from our factory. Quality products and low price are available.

Product introduction

API Spec 5L 406.4×10.31 X52M PSL2 Line Pipe

Product Overview

API Spec 5L 406.4×10.31 X52M PSL2 Line Pipe is a high‑strength line pipe manufactured in strict accordance with API Spec 5L and ISO 3183 standards. It has an outer diameter of 406.4 mm, wall thickness of 10.31 mm, material grade X52M, and product specification level PSL2. The pipe features stable mechanical properties, excellent weldability, and high low‑temperature toughness, widely used in medium‑to‑high pressure oil and gas transmission pipelines.

Basic Specification

Item	Details
Standard	API Spec 5L (46th Edition), ISO 3183
Size	406.4 mm (OD) × 10.31 mm (WT)
Steel Grade	X52M
Specification Level	PSL2
Manufacturing Process	ERW / LSAW / Seamless
Length	SRL 5.8–7.2 m, DRL 11.8–12.2 m, custom length
End Type	Beveled End (BE), Plain End (PE)
Surface Treatment	Anti-rust oil, black paint; optional FBE / 3PE coating

Chemical Composition (PSL2 Requirements)

Controlled carbon and carbon equivalent for improved welding performance

Strict limits for P, S and other residual elements

Full heat analysis and product analysis available

Mechanical Properties

Property	Value
Yield Strength	≥ 359 MPa
Tensile Strength	438 – 517 MPa
Elongation	≥ 20%
Impact Test	Mandatory Charpy V‑notch impact test (PSL2 requirement)
Hardness	≤ 248 HB
Delivery Condition	TMCP / Quenched and Tempered (QT)

Dimensional Tolerances

Outer Diameter: ±0.50 mm

Wall Thickness: +12.5% / −10%

Straightness: ≤ 1.5 mm/m

Ovality controlled per API 5L PSL2

Key Advantages

Higher strength and better pressure bearing capacity

Excellent low‑temperature toughness and fatigue resistance

Strict PSL2 inspection ensures stable and reliable quality

Good weldability suitable for field construction and fabrication

Full material traceability and complete test reports

Applications

Oil and natural gas transmission pipelines

Gathering line and long‑distance pipeline projects

Medium‑to‑high pressure fluid transportation

Energy pipeline engineering requiring PSL2 quality level

Inspection & Test

Chemical composition analysis

Tensile test, flattening test, flaring test

Charpy impact test

Hydrostatic test

Ultrasonic testing (UT) or eddy current test (ET)

Dimensional and visual inspection

Packaging & Marking

Bundled with steel strips, protected with plastic end caps

Seaworthy export packing

Markings: standard, grade, size, heat number, PSL2, length, manufacturer logo

Quality Assurance

ISO 9001 quality management system

Full Material Test Certificate (MTC) provided

Full compliance with API 5L PSL2 inspection standards

About us

Hebei Huayang Steel Pipe Co., Ltd. was founded in 2005, with a registered capital of 500 million yuan. The company covers an area of more than 1,000 mu, with annual sales of 10 billion yuan, more than 600 employees and an annual productivity of 2.75 million tons. The company has 17 new automatic steel pipe production lines and 14 high-frequency production lines, with a diameter of 73-660 mm; Three double-sided submerged arc welded steel pipe production lines with diameters of 406.4-1422.4mm;; 24 hot tube expanding production lines, with a diameter of 230-820mm; Two anticorrosion steel pipe production lines with a diameter of 73-1626 mm; 2 automatic painting production lines. With 3 branches and 5 offices, the products are sold to various cities and exported to more than 80 countries such as Southeast Asia, Middle East, Europe and America.

Packaging, transportation and delivery

Packaging, transportation and delivery

At Hebei Huayang Steel Pipe Co., Ltd., we apply standardized and reliable packaging solutions for all our steel pipe products. Our pipes can be securely packed by hexagonal bundling or circular bundling according to product diameter, wall thickness and customer requirements. Each pipe end is protected with high‑strength plastic pipe caps to avoid collision damage, dust and moisture during transportation and storage. The whole bundle is firmly wrapped with durable woven bags to enhance stability and prevent scratches or deformation.

We support a complete range of transportation methods to satisfy global customers, including road transportation, railway transportation, sea freight and container shipping. Based on our strategic location in Cangzhou, Hebei Province, we enjoy convenient access to major ports such as Tianjin Port, which greatly improves logistics efficiency and reduces transportation costs.

For standard specifications and normal order quantities, the general delivery time is about 30 days after order confirmation and deposit receipt. For large‑scale orders, special sizes or customized processing requirements, our production and sales team will formulate a detailed production plan and provide an accurate delivery schedule accordingly to ensure on‑time supply and stable performance for projects and clients worldwide.

Strict quality control

1. During and after the production, experienced quality inspectors randomly check the products to ensure that each steel pipe is qualified for production and application.

2. A nationally recognized laboratory with CNAS certification and certification by French Classification Society.

3. Have CNOOC access certificate, KOC oil company access network, ADNOC Abu Dhabi oil company access network, Petrobras access network, etc.

4. Accept the inspection by the third party designated/paid by the buyer, such as SGS and BV.