Hebei Huayang Steel Pipe Co., Ltd is one of the most experienced manufacturers and suppliers of 76-660mm hfw black welded pipe mechanical equipment base tube in China. Welcome to buy discount 76-660mm hfw black welded pipe mechanical equipment base tube made in China here from our factory. Quality products and low price are available.
Product introduction
1. Product Overview
Product Name
76-660mm HFW Black Welded Pipe Mechanical Equipment Base Tube
Core Standard & Production Basis
This mechanical base tube is manufactured in accordance with national and international steel pipe structural standards, adopting advanced HFW (High-Frequency Welding) integral forming process. The whole pipe is treated with black anti-rust varnish to form a black welded pipe finished product, specially developed and produced for mechanical equipment base support, equipment frame structure and industrial structural engineering. It abandons the process bias of traditional fluid conveying steel pipes, focuses on structural rigidity, flatness and load-bearing stability, and is a special structural steel tube for mechanical equipment installation.
Core Definition
Different from medium-temperature and high-pressure process pipes, this series of HFW black welded pipes takes mechanical load-bearing and structural stability as the core performance indicators. With outer diameter coverage of 76mm to 660mm, complete wall thickness specifications and high dimensional accuracy, it perfectly meets the size matching requirements of various large, medium and small mechanical equipment bases. The black anti-rust surface realizes direct installation without secondary painting, which greatly saves the construction cycle of mechanical equipment manufacturing.
2. Key Technical Specifications
2.1 Dimension Range
Outer Diameter: 76 mm ~ 660 mm (full-size coverage for mechanical base matching)
Wall Thickness: 3.0 mm ~ 22 mm (thick wall load-bearing type available for heavy-duty equipment base)
Standard Length: 6m / 12m; random length 5.8–11.8m, support arbitrary fixed-length cutting, end flatting and chamfering
Dimensional Tolerance: Strict control of outer diameter, wall thickness, straightness and ovality, ensuring flat installation and uniform force on equipment base
2.2 Common Material Grades (Structural Special)
|
Material Grade |
Tensile Strength |
Yield Strength |
Core Advantage |
Applicable Scenarios |
|
Q235B |
375–500 MPa |
≥235 MPa |
Good toughness, low cost, stable welding performance |
Light and medium-duty mechanical equipment base |
|
Q355B |
470–630 MPa |
≥355 MPa |
High strength, strong load-bearing capacity, anti-deformation |
Heavy-duty machinery, large equipment support base |
2.3 Structural Performance Parameters
Load-Bearing Characteristic: Uniform structural stress, strong vertical and horizontal load-bearing capacity, not easy to deform after long-term equipment compression
Surface State: Black anti-rust varnish finish, anti-oxidation, anti-corrosion, no rust during storage and use
Processing Performance: Excellent cutting, welding, drilling and bending performance, convenient for equipment frame assembly and fixed installation
Applicable Temperature: -20℃ ~ 60℃, suitable for conventional indoor and outdoor mechanical working environment
3. Manufacturing Process (HFW High-Frequency Welding Structural Pipe)
Raw Material Screening: Adopt high-quality structural hot-rolled coil, strictly control material composition to ensure structural toughness and strength
Precision Continuous Forming: Multi-pass roller precise forming, uniform pipe wall thickness and regular roundness, avoiding structural stress concentration
HFW High-Frequency Solid-State Welding: No filling wire welding, narrow heat-affected zone, weld strength consistent with base metal, no welding crack defect
Internal and External Burr Removal: Smooth inner and outer pipe walls, no bulge, ensuring fitting flatness during equipment assembly
Stress Relief Treatment: Eliminate welding and forming residual stress, effectively prevent pipe body deformation in later use
Precision Sizing & Straightening: Ensure pipe body straightness, meet the flatness requirements of mechanical equipment base installation
Fixed-Length Cutting & End Treatment: Flat pipe end, no burr, customizable chamfering for bolt fixing and welding assembly
Black Anti-Rust Coating: Uniform spraying of black anti-rust varnish on the whole pipe, air-dried and shaped for finished product delivery
4. Quality Inspection Standards for Structural Base Pipe
Material Component Detection: Batch chemical analysis of raw materials to ensure compliance with structural steel standards
Mechanical Performance Test: Tensile test, bending test and impact test to guarantee overall structural stability
Weld Seam NDT Inspection: 100% ultrasonic inspection of weld seam to ensure no internal welding defects and safe load-bearing
Dimensional Precision Inspection: Full inspection of outer diameter, wall thickness, straightness and length to meet mechanical assembly tolerance requirements
Surface Quality Inspection: Check coating uniformity, no peeling, missing coating and surface cracks
Custom Inspection Support: Accept third-party authoritative testing such as SGS and BV to meet equipment factory inspection standards
5. Outstanding Product Advantages
Professional Mechanical Structural Design: Differentiated from fluid conveying pipes, optimized for equipment base load-bearing, with higher structural rigidity and anti-deformation ability, suitable for long-term fixed support of mechanical equipment.
Full-Size Matching Advantage: Complete specification range of 76–660mm outer diameter, covering all conventional mechanical equipment base support pipe sizes, one-stop procurement without size mismatch.
HFW Welding High Stability: Integrated high-frequency welding, seamless weld combination, uniform pipe body stress, no fracture or deformation under long-term static and dynamic load of equipment.
Finished Black Anti-Rust Surface: Standard black anti-rust varnish treatment, smooth and beautiful appearance, no need for secondary painting, directly usable for equipment assembly, saving processing cost and time.
High Dimensional Accuracy: Precise forming and straightening process, small tolerance, flat pipe end, ensuring tight fitting and stable installation of equipment base without shaking.
Strong Customization Flexibility: Support non-standard wall thickness, arbitrary fixed-length cutting, pipe end chamfering, drilling and other secondary processing, tailor-made for mechanical equipment frame and base structure.
Cost-Effective Structural Material: Compared with seamless pipes, it has lower cost and faster delivery, which is more suitable for batch manufacturing of mechanical equipment.
6. Main Application Scenarios
Mechanical Equipment Base: Support base for automation equipment, textile machinery, construction machinery, logistics equipment
Equipment Frame Structure: Welded frame, support bracket and chassis structure of industrial mechanical equipment
Industrial Platform Support: Load-bearing support pipe for factory operation platform, equipment auxiliary support frame
Engineering Structural Parts: Municipal mechanical facilities, steel structure support, equipment fixed base
Heavy-Duty Equipment Support: Base load-bearing pipe for large mechanical equipment, pressure equipment auxiliary support
7. Surface Treatment & Packaging
Surface Treatment Options
Standard Finish: Whole pipe black anti-rust varnish (factory standard, anti-oxidation and anti-corrosion)
Enhanced Anti-Corrosion: Shot blasting pretreatment + thickened anti-rust coating
Custom Surface: Galvanizing, painting and other surface treatments according to equipment use environment
Packaging Standards
Small-Diameter Pipes: Bundled with steel strips, equipped with plastic end caps to prevent end deformation and dust entry
Large-Diameter Pipes: Separated by wooden brackets, wrapped with waterproof tarpaulin to avoid extrusion deformation and rust during transportation
Custom Marking: Print specification, material grade, production batch and manufacturer information on pipe body for equipment traceability
8. Manufacturer Strength
Professional HFW structural pipe production line, focusing on mechanical support pipe customization and production, with annual output of 300,000 tons
Rich production experience in mechanical equipment base pipes, familiar with the structural parameter requirements of various mechanical supporting scenarios
Complete testing equipment and perfect quality control system to ensure stable load-bearing performance of each batch of products
Support batch customized processing, provide one-stop services such as cutting, chamfering, drilling and surface treatment
Stable supply and fast delivery, long-term supporting equipment manufacturers and steel structure engineering enterprises
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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