Hebei Huayang Steel Pipe Co., Ltd is one of the most experienced manufacturers and suppliers of q235b thick-walled welded steel pipe in China. Welcome to buy discount q235b thick-walled welded steel pipe made in China here from our factory. Quality products and low price are available.
Product introduction
Q235B Thick-Walled Welded Steel Pipe
Product Name: Q235B Thick-Walled Straight Seam / Spiral Welded Steel PipeMaterial: Q235B Carbon Structural SteelStandards: GB/T 3091, GB/T 9711.1, API 5L, ISO 3183, ASTM A53
Product Overview
Q235B thick-walled welded steel pipe is a high-strength carbon steel pipe manufactured via advanced ERW (Electric Resistance Welding), LSAW (Longitudinal Submerged Arc Welding) or SSAW (Spiral Submerged Arc Welding) processes. Crafted from premium Q235B mild steel, it features a robust, thick-walled structure designed for superior pressure resistance, structural stability, and durability in demanding industrial applications.Its excellent weldability, ductility, and cost-effectiveness make it a preferred choice for structural support and medium-pressure fluid conveyance.
Key Specifications
Outer Diameter (OD): 820mm ~ 14220mm
Wall Thickness (WT): 17mm ~ 50mm
Standard Length: 5.8m, 6m, 11.8m, 12m (Custom lengths available)
Shape: Round
Manufacturing Process: ERW, LSAW (UOE/JCOE), SSAW
Product Features
Exceptional Structural Strength: Thick-walled design provides high rigidity and load-bearing capacity, ideal for structural columns and piling.
Superior Pressure Resistance: Capable of safely conveying water, gas, oil, and other fluids under medium to high pressure.
Excellent Weldability: Low carbon content ensures stable, crack-resistant welds, facilitating on-site fabrication and installation.
Good Ductility & Toughness: High elongation rate prevents brittle fracture, adapting to minor deformations and dynamic loads.
Cost-Effective: Balances high performance with competitive pricing, offering optimal value for large-scale projects.
Customizable: Wide range of sizes and lengths, with options for beveling, threading, and various surface treatments.
Surface Treatment
Black Painting: Standard anti-rust oil + black enamel coating
Hot-Dip Galvanizing: For enhanced corrosion resistance in harsh environments
3PE/FBE Coating: External anti-corrosion coating for long-distance pipelines
Sand Blasting (SA2.0/SA2.5): For surface preparation prior to coating
Application Scope
Construction & Structure: Building frames, bridges, steel columns, piling, support structures
Fluid Transportation: Water supply/drainage, gas pipelines, low-pressure oil transmission
Engineering Projects: Piping for power plants, chemical plants, dock facilities
Machinery & Equipment: Mechanical structures, pipe racks, conveyor supports
Municipal Engineering: Fire protection systems, sewage treatment, infrastructure
Quality & Inspection
Dimensional Check: OD, WT, length, straightness inspected per standards
Non-Destructive Testing (NDT): Full-body Ultrasonic Testing (UT), Hydrostatic Pressure Test
Mechanical Testing: Tensile, flattening, bending, and impact tests
Weld Inspection: Visual inspection, X-ray testing for LSAW/SSAW pipes
Certificates: Mill Test Certificate (MTC), ISO 9001, API 5L, CE
Packaging & Delivery
Packing: Steel frames, woven cloth, or as per customer requirements
Delivery Time: 7-30 days (depending on order quantity and specifications)
Payment Terms: T/T, L/C at sight
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.
Certifications
API 2B
API 5L
GOST
ISO 9001
EN 10219
EN 10210
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