Hebei Huayang Steel Pipe Co., Ltd is one of the most experienced manufacturers and suppliers of 76-660mm hfw pipe industrial boiler low pressure water inlet tube in China. Welcome to buy discount 76-660mm hfw pipe industrial boiler low pressure water inlet tube made in China here from our factory. Quality products and low price are available.
Product introduction
1. Product Overview
76-660mm HFW Industrial Boiler Low Pressure Water Inlet Tube is a professional high-frequency welded steel pipe customized for industrial boiler water supply and circulation systems. Different from ordinary water delivery pipes, this HFW pipe adopts boiler-grade hot-rolled carbon steel raw materials and special welding & stress relief technology, targeting low-pressure boiler feed water, circulating water and auxiliary water supply pipeline systems.
The product covers a complete outer diameter range of 76mm to 660mm, with standardized thick-wall and medium-wall specifications, fully adapting to long-term low-pressure, normal-temperature and medium-temperature water circulation working conditions of industrial boilers. All products comply with boiler pipeline manufacturing standards, featuring stable pressure resistance, excellent thermal stability and no weld failure. It is the preferred cost-effective pipe for industrial boiler supporting water inlet pipelines in factories, power plants, chemical plants, pharmaceutical plants and food processing plants.
Core Application Scenarios
Industrial low-pressure boiler feed water inlet main and branch pipelines
Boiler room circulating water, make-up water and backwater pipeline systems
Factory central heating boiler supporting water delivery pipelines
Chemical, pharmaceutical and food factory boiler auxiliary piping
Small and medium power station low-pressure boiler water supply network
Industrial furnace heat exchange water circulation pipeline engineering
Municipal heating station boiler water inlet and circulation piping
2. Production Technology & Boiler-Grade Craft Advantages
This boiler dedicated HFW pipe adopts strict industrial pressure pipeline production process, optimized for boiler water circulation working conditions, eliminating hidden dangers such as weld rust, deformation and pressure leakage in long-term boiler operation:
Boiler-grade hot rolled carbon steel coil raw material inspection (strict control of carbon, sulfur and phosphorus content to ensure thermal stability)
Precision continuous rolling forming to ensure uniform pipe wall thickness and roundness
High-frequency longitudinal resistance welding (HFW), full fusion weld without gap
Online weld normalizing heat treatment to eliminate welding residual stress, prevent thermal fatigue cracking
100% full-length ultrasonic non-destructive testing for weld seams
Fixed-length cutting, pipe end deburring and precision finishing
Strict hydrostatic pressure test for boiler pipeline working condition simulation
Anti-rust oil protection & standard export bundling packaging
Unique Advantages for Industrial Boiler Water Inlet System
Boiler-Grade Thermal Stability: Optimized raw material formula adapts to long-term medium-temperature water circulation, no pipe body deformation or weld cracking under frequent boiler start-stop temperature changes, effectively avoiding pipeline failure risks.
Reliable Low-Pressure Bearing Performance: Specially designed for industrial low-pressure boiler working conditions (≤2.5MPa), stable pressure bearing, no leakage, fully meeting boiler feed water and circulating water pressure requirements.
Anti-Fatigue & Long Service Life: Weld stress relief treatment resists water flow impact and cyclic pressure fatigue, long-term operation without failure, service life far exceeding ordinary civil welded pipes.
Smooth Inner Wall, Low Operation Resistance: Finished weld bead leveling treatment reduces water flow resistance, improves boiler water circulation efficiency, and saves boiler system operating energy consumption.
Strict Industrial Safety Standards: Produced in accordance with pressure pipeline specifications, with complete inspection reports, suitable for industrial boiler special equipment supporting projects and safety acceptance.
High Cost Performance: Compared with seamless boiler pipes, HFW welded pipes have lower project cost, stable batch quality and shorter delivery cycle, ideal for large-scale boiler supporting pipeline construction.
3. Complete Technical Specification Parameters
|
Item |
Professional Parameters |
|
Outer Diameter Range |
76mm – 660mm (NPS3 ~ NPS24) |
|
Wall Thickness Range |
3.0mm – 20mm (medium & thick wall for boiler pressure resistance; SCH40/SCH80 customized) |
|
Standard Length |
6m, 12m (industrial engineering standard); customizable fixed cutting length |
|
Applicable Standards |
GB/T 3091, GB/T 3087, ASTM A53, EN 10217, ISO 3183 (low-medium pressure boiler pipeline standards) |
|
Steel Grades |
Q235B, S235JR, ASTM A53 Gr.B, X42 (boiler dedicated carbon steel grades) |
|
Working Medium |
Industrial boiler feed water, circulating water, low-temperature hot water |
|
Max Working Pressure |
≤2.5MPa (fully adapt to industrial low-pressure boiler system) |
|
Working Temperature Range |
-20℃ ~ 450℃ |
|
Pipe End Treatment |
Beveled ends (welding connection), plain ends, grooved ends (industrial pipe fitting matching) |
|
Surface Treatment |
Black anti-rust oil, primer painting, 3PE anti-corrosion (buried boiler pipeline optional) |
|
Size Tolerance |
OD ±0.75%, Wall thickness ±8%, Length ±50mm |
4. Core Industrial Performance
4.1 Excellent Weld Integrity & Pressure Resistance
All HFW welds adopt full-process precision welding and online heat treatment, with weld strength equivalent to base metal. 100% hydrostatic pressure test and ultrasonic flaw detection ensure no trachoma, crack or seepage. It can operate stably under long-term low-pressure water circulation and instantaneous pressure fluctuation of boiler systems, meeting industrial pressure pipeline safety standards.
4.2 Superior Thermal & Structural Stability
Boiler-grade carbon steel material has uniform grain structure, good high-temperature resistance and thermal deformation resistance. It will not soften or deform under long-term medium-temperature water delivery, and can adapt to frequent temperature rise and fall of boiler start-stop, avoiding pipeline loosening and damage.
4.3 Anti-Scaling & Smooth Circulation Performance
Precision pipe forming and inner wall finishing ensure smooth pipe interior, effectively reducing scale adhesion and sediment accumulation in boiler water. It avoids pipeline blockage and heat exchange efficiency reduction caused by long-term operation, reducing boiler system maintenance frequency.
4.4 Strong Environmental & Corrosion Adaptability
The pipe body has good atmospheric and water medium corrosion resistance, suitable for humid and high-temperature boiler room environment. Optional external anti-corrosion coating can resist outdoor and buried environment corrosion, ensuring long-term stable operation of boiler water inlet pipelines.
4.5 Industrial Construction Compatibility
Accurate dimensional tolerance and standard pipe end processing are compatible with global industrial boiler pipe fittings, flanges and valves. On-site welding and assembly are convenient, which greatly improves the construction efficiency of boiler supporting pipeline projects.
5. Strict Factory Inspection for Boiler Pipeline Safety
In view of the high safety requirements of industrial boiler supporting pipelines, all products undergo full-standard industrial pressure pipeline inspection before delivery to ensure project safety acceptance:
Raw material chemical composition and mechanical performance test (boiler grade certification)
Pipe body tensile, yield strength and elongation mechanical test
Weld flattening, bending and impact toughness test
100% online ultrasonic weld non-destructive flaw detection
Hydrostatic pressure simulation test for boiler working conditions
High-temperature resistance and thermal stability sampling test
Dimensional precision and surface defect full inspection
SGS/BV/TUV third-party witnessing inspection (customizable)
6. Export Packaging & Industrial Logistics
Small & Medium Diameter (76-219mm): Standard hexagonal steel belt bundling, plastic end caps protection, waterproof kraft paper wrapping, anti-collision and anti-rust for long-distance sea and land transportation.
Large Diameter (273-660mm): Single pipe independent protection, container bulk loading, soft spacer separation to avoid pipe body and weld damage.
Industrial Marking: Each bundle is marked with steel grade, specification, boiler standard, batch number and inspection information, supporting industrial project bidding, customs clearance and safety acceptance.
Global Logistics: Support sea freight, railway and truck transportation, stable supply for industrial boiler supporting projects in Southeast Asia, Middle East, Africa, Europe and other regions.
7. Authoritative Qualification Certifications
ISO 9001 Quality Management System Certification
ISO 14001 Environmental Management System Certification
CE Pressure Equipment Directive Certification
GB/T 3087 Low & Medium Pressure Boiler Pipe Production Qualification
SGS / BV / TUV Third-Party Industrial Inspection Reports
Complete export customs inspection documents
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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