Name: China Low Price Weldable Steel Tubing Manufacturers Suppliers Factory - Huayang Steel Pipe
Brand: Huayang
SKU: 297573839

Hebei Huayang Steel Pipe Co., Ltd is one of the most experienced manufacturers and suppliers of weldable steel tubing in China. Welcome to buy discount weldable steel tubing made in China here from our factory. Quality products and low price are available.

Product introduction

Weldable steel tubing refers to steel tubes specifically formulated and manufactured to enable reliable, high-quality welding with standard processes, while maintaining structural integrity, mechanical properties and corrosion resistance post-weld. It is distinct from non-weldable or poor-weldability steels, and covers both welded (fabricated) and seamless (for field welding) tube variants, with strict chemical and mechanical controls to prevent cracking, porosity or brittleness in the heat-affected zone (HAZ).

Key Materials & Grades

Carbon Steel (Most Common): Low-carbon (C ≤ 0.25%) grades like A53, A106 Grade B, API 5L X42/X52, Q235/Q355; ultra-low carbon & controlled sulfur/manganese for enhanced weldability. Avoid high-carbon or high-alloy steels without preheat/post-weld heat treatment (PWHT).

Alloy Steel: Chrome-moly (e.g., A335 P11/P22) for high-temperature applications; requires precise preheat/PWHT.

Stainless Steel: Austenitic grades (304/304L, 316/316L; L=low carbon to prevent intergranular corrosion) with excellent weldability via TIG/MIG; ferritic/martensitic may need PWHT.

Production Types & Processes

Type	Process	Features	Typical Standards
ERW (Electric Resistance Welded)	High-frequency current heats strip edges for pressure fusion	Cost-effective, uniform wall, tight dimensional tolerance	ASTM A53, API 5L, GB/T 3091
LSAW (Longitudinal Submerged Arc Welded)	Submerged arc welding for straight seam, heavy wall/large OD	High pressure capacity, high structural strength	API 5L, ASTM A671
SSAW (Spiral Submerged Arc Welded)	Helical winding & double-sided SAW	Good for large diameters, strong against stress	API 5L, SY/T 5037
Seamless (for Weldable Applications)	Pierced & rolled billets, no weld seam	Best for extreme pressure/temperature; field-weldable	ASTM A106, API 5L seamless

Welding Methods & Critical Controls

Common Processes: SMAW (Stick), GMAW (MIG), GTAW (TIG), SAW (Submerged Arc); TIG preferred for thin walls and root passes.

Key Controls:

Material cleanliness (low S, P, H, O to avoid porosity/cracking)

Preheat (for thick walls/alloy steels to prevent cold cracking)

Shielding gas (Ar/Ar-CO₂ for stainless; CO₂ for carbon steel)

Post-weld heat treatment (stress relief for high-alloy/thick tubes)

NDT (RT, UT, MT, PT) to verify weld quality

Applications

Energy: Oil & gas pipelines, refinery process piping, power plant steam tubes

Construction: Structural columns, scaffolding, water/gas distribution networks

Industrial: Chemical plant piping, HVAC systems, mechanical components

Infrastructure: Bridge piles, water treatment, offshore platforms

Standards & Quality Certifications

International: ASTM (A53, A106, A312), API (5L, 5CT), EN 10217, ISO 3183

Domestic (China): GB/T 3091, GB/T 9711, SY/T 5037

Certifications: ISO 9001, PED, ASME U Stamp, API Monogram

Selection & Sourcing Tips

Define requirements: Pressure rating, temperature, corrosive media, weld process, inspection criteria

Verify mill certificates (MTC): Chemical composition, mechanical properties, NDT results

Match steel grade to welding process: Avoid over-specifying (e.g., 316 for non-corrosive service) to save cost; use low-carbon variants for stainless steel

Surface condition: Remove mill scale, rust, oil before welding to prevent defects

Would you like a concise weld prep checklist for carbon steel ERW tubing that you can print and use on-site?

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.