Name: China GOST 31447-2012 820mmx13mm K60 Manufacturers Suppliers Factory - Huayang Steel Pipe
Brand: Huayang
SKU: 305316698

Hebei Huayang Steel Pipe Co., Ltd is one of the most experienced manufacturers and suppliers of gost 31447-2012 820mmx13mm k60 in China. Welcome to buy discount gost 31447-2012 820mmx13mm k60 made in China here from our factory. Quality products and low price are available.

Product introduction

Product Description

GOST 31447-2012 820mm×13mm K60 Steel Pipe is large-caliber longitudinal submerged arc welded trunk pipeline strictly manufactured in accordance with interstate standard GOST 31447-2012, specially designed for main oil, natural gas and petroleum product transmission pipelines in Russia, Central Asia and CIS countries. Fixed dimension OD 820mm, wall thickness 13mm, strength class K60 low-alloy pipeline steel, with integrated high-strength weld after full-length local heat treatment, uniform wall thickness, ultra-high roundness and smooth inner surface without residual welding burrs.

This pipe can adapt to extreme low temperature environment as low as -60℃ and maximum working pressure up to 9.8MPa, fully meeting the strict technical acceptance requirements of Gazprom and CIS large oil & gas trunk line projects. All finished pipes pass 100% hydrostatic pressure test, full weld ultrasonic non-destructive inspection and Charpy low-temperature impact test. Optional 3PE, FBE external anti-corrosion and internal epoxy lining coating systems, effectively resist soil corrosion, salt spray and electrochemical corrosion, with service life reaching 40–50 years for buried trunk pipeline networks. It is the standard large-diameter high-strength pipeline for long-distance cross-region oil and gas transmission projects.

1. Basic Product Specifications

Product Name: GOST 31447-2012 820mm×13mm K60 Steel Pipe
Executive Standard: GOST 31447-2012 (Welded steel pipes for trunk gas, oil and oil product pipelines)
Fixed Dimension: Outer Diameter 820mm, Wall Thickness 13mm
Strength Class: K60 Low-alloy Pipeline Steel
Production Process: Longitudinal Submerged Arc Welding (LSAW), online internal & external burr removal, full weld local heat treatment (LTO)
Standard Length: 6m, 12m; customized fixed length within 12m available
Applicable Medium: Natural gas, crude oil, refined oil, non-corrosive petroleum medium
Working Condition: Working pressure ≤9.8MPa, service temperature range -60℃ ~ +60℃
Pipe End Treatment: 30°–37.5° beveled welding ends, plastic anti-collision protective caps
Surface Anti-corrosion Options: Black anti-rust oil, 3-layer polyethylene (3PE), fusion bonded epoxy (FBE), internal liquid epoxy lining
Core Features: GOST interstate standard certified, K60 high strength, ultra-low temperature toughness, large flow capacity, full weld heat treatment, high pressure resistance, dedicated for CIS trunk oil & gas pipelines

2. Core Product Advantages

2.1 Strict GOST 31447-2012 K60 Standard Material Performance

K60 strength class steel complies fully with GOST 31447-2012 metallurgical index requirements, minimum yield strength 460MPa, tensile strength 590MPa, excellent low-temperature impact toughness, stable mechanical properties under extreme cold climate, no brittle fracture risk in Siberian and Central Asia alpine pipeline projects. Low carbon equivalent ensures outstanding weldability, effectively avoiding cold cracking of weld heat-affected zone.

2.2 Full Weld Local Heat Treatment, Zero Leakage Risk

Adopt automatic double-sided submerged arc longitudinal welding, matched with online full-length weld normalization heat treatment to eliminate welding residual stress. Every pipe undergoes 100% full-length hydrostatic pressure test and full weld UT non-destructive flaw detection, completely eliminating tiny pores, slag inclusions and microcracks, fully satisfying the airtight safety standard of long-distance trunk oil and gas pipelines.

2.3 820mm Large Caliber, Large-Flow Transmission Capacity

820mm outer diameter matches mainstream trunk pipeline design standard of CIS energy projects, 13mm thick wall provides sufficient structural bearing capacity to resist deep burial soil load, mountain landslide extrusion and construction impact. Large inner passage reduces pipeline parallel laying quantity, simplifies project layout and lowers overall engineering investment.

2.4 Excellent Extreme Low-Temperature Adaptability

Specially optimized K60 steel formula and welding process, Charpy impact test qualified at -60℃, suitable for permafrost, snowfield and high-latitude cold zone pipeline laying, solving the brittle failure hidden danger of ordinary steel pipes in low-temperature oil & gas projects.

2.5 Complete Anti-Corrosion Solutions for CIS Complex Terrain

Multiple mature anti-corrosion systems match different laying environments: 3PE coating for general buried trunk lines with strong soil abrasion resistance; FBE coating for high-temperature oil transmission and coastal saline soil areas; internal epoxy lining prevents crude oil wax deposition, greatly extending pipeline whole-life service cycle.

3. Dimensional Tolerance Standard (GOST 31447-2012)

Inspection Item	Standard Tolerance
Fixed Outer Diameter 820mm	±1.0% of nominal OD
Fixed Wall Thickness 13mm	+15% / −12.5%
Pipe Straightness	≤1.8mm per meter
Out-of-Roundness	≤1.0% of outer diameter
Pipe Cutting Length	+150mm / −0mm

4. Mechanical & Chemical Properties of K60

4.1 Mechanical Properties (GOST 31447-2012)

Strength Class	Min. Yield Strength	Tensile Strength	Min. Elongation	Mandatory Factory Test
K60	≥460MPa	590–760MPa	≥20%	100% hydrostatic test + full weld UT + -60℃ Charpy impact test

4.2 Maximum Allowable Chemical Composition of K60

| Element | C | Si | Mn | P | S | Cu | Ni | Cr | Mo | | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | | Content | ≤0.22% | ≤0.40% | ≤1.50% | ≤0.025% | ≤0.020% | ≤0.50% | ≤0.50% | ≤0.30% | ≤0.15% |

Note: All pipes pass flattening test, reverse bend test and weld cold cracking resistance test to meet CIS trunk pipeline acceptance specifications.

5. Manufacturing Process

Raw Material Inspection: Low-alloy steel plate certified to GOST standard, full chemical composition and low-temperature mechanical performance inspection, reject unqualified raw materials.
Plate Edge Milling & Pre-treatment: Precise edge planing to guarantee welding gap consistency, surface rust and oxide removal.
Multi-Roll Precision Forming: Circular forming to ensure uniform roundness and stable wall thickness of 820mm pipe blank.
Double-Sided Submerged Arc Longitudinal Welding: Closed-loop automatic welding parameter control to guarantee full penetration weld.
Internal & External Weld Burr Removal: Online mechanical scarving to clear welding surplus flash for smooth inner bore.
Full Weld Local Heat Treatment (LTO): Eliminate welding residual stress, improve weld low-temperature toughness.
Sizing & Straightening: Precision sizing mill calibrate OD to standard 820mm, straightener correct pipe linearity.
Fixed-Length Cutting: Neat burr-free cutting according to customer required length.
Full-Performance Inspection: 100% hydrostatic pressure test, full weld ultrasonic flaw detection, low-temperature impact test and full dimensional reinspection.
Anti-Corrosion Construction & Laser Marking: Anti-rust oil or customized anti-corrosion coating processing, permanent marking including GOST standard, K60 grade, dimension, batch number and heat treatment mark.
Export Standard Packaging: Thick waterproof PE film wrapping, high-strength steel strip bundling, plastic end caps for pipe end protection for sea and land transportation to Central Asia and Russia.

6. Main Application Scope

Cross-border main natural gas trunk pipelines of Russia, Kazakhstan, Uzbekistan and other CIS countries
Long-distance crude oil and refined oil transmission trunk lines in Central Asia oil fields
Large oil depot inlet & outlet main pipelines and refinery medium-pressure conveying pipelines
Permafrost, mountain and coastal saline soil large-caliber buried energy pipeline projects
Overseas EPC energy projects complying with GOST interstate pipeline standards

7. Quality Inspection & Certification

Fully compliant with GOST 31447-2012 interstate trunk oil & gas pipeline standard
Complete GOST factory certification and full set Mill Test Report (MTR) provided with each batch
Support local CIS third-party inspection and Gazprom project acceptance
ISO 9001 quality management system certified production
Full batch traceability from raw steel plate to finished pipe delivery

8. Packaging & Delivery

Packaging: Bare black pipes coated with anti-rust oil, bundled with heavy-duty steel strips and covered with thick waterproof woven cloth; anti-corrosion coated pipes wrapped with wear-resistant PE film, plastic protective caps fitted for both pipe ends.
Product Marking: Laser permanent marking including OD×WT, K60 strength class, GOST 31447-2012, batch number, heat treatment mark and production date.
Trade Terms: FOB, CIF, CFR, DAP, DDP suitable for Russia & Central Asia overland transport
Shipping Ports: Tianjin, Qingdao, Lianyungang (support railway land transport to CIS)
Customization Service: Custom fixed length, full set anti-corrosion coating, special pipe end processing, extra low-temperature impact test report
Delivery Cycle: Conventional stock specifications 10–15 working days; customized anti-corrosion K60 pipes 15–25 working days

9. Why Choose Our GOST 31447-2012 820mm×13mm K60 Steel Pipe

Professional LSAW production line dedicated to GOST CIS energy pipeline, strictly implement K60 material and heat treatment technical requirements
Full-process weld inspection + ultra-low temperature impact test, fully meet Gazprom and CIS national project acceptance standards
Stable 820mm×13mm fixed dimension tolerance, high roundness, good matching with standard GOST pipe fittings
Multiple anti-corrosion technical schemes adapt to cold, saline soil, desert and various complex laying environments in Central Asia and Russia
Support railway bulk land transport to Central Asia, rich export experience for CIS oil & gas trunk line projects
Professional technical team familiar with GOST standard, provide free pipeline design and installation technical guidance for energy EPC projects

Contact Us

For factory quotations, detailed GOST technical data sheets, bulk order discounts and delivery schedules of GOST 31447-2012 820mm×13mm K60 Steel Pipe, please contact our professional global sales team. We supply GOST certified K60 high-strength trunk pipeline and one-stop customized anti-corrosion solutions for Russia, Central Asia and global oil & gas main transmission projects.

About us

Company gate (overlooking view)

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

Steel pipe packaging and loading scene

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.