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Hebei Haihao Group Huadian High Pressure Pipe Fittings Co., Ltd.
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Hebei Haihao Group Huadian High Pressure Pipe Fittings Co., Ltd.Hebei Haihao Group Huadian High Pressure Pipe Fittings Co., Ltd.Pressure Pipe Fittings · Flanges · Factory Direct

Since 1982. Pressure piping component manufacturer covering elbows, flanges, tees, reducers and project supply.

ISO 9001 quality system · ABS Type Approval · safety-registered manufacturer

Products

  • Elbow
  • Tee
  • Reducer
  • Flange
  • Pipe Bend

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Contact

  • Donglin, Mengcun County, Cangzhou City, Hebei Province, China
  • +86 132 9342 5333
  • haihaojituan@163.com
  • www.haihaohuadian.com

Global delivery

· Shipping to projects in

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CIS

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Europe

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Oceania

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PrivacyTermsEstablished 1982 · Mengcun, Hebei, China

Insights

Insights & Knowledge Center

Technical articles, standards comparisons, project case studies and buyer guides on pressure piping components, flanges and forged fittings.

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165 articles

不锈钢管.jpgStandards
Standards

ASTM A106 vs A53 Carbon Steel Pipe Seamless vs Welded Guide

ASTM A106 vs A53 carbon steel pipe explained for buyers: seamless vs welded manufacturing, silicon content, service limits and decision guide.

Jun 5, 20267 min readHebei Haihao Group
全图片.JPGTechnical
Technical

Hardness Conversion HV HRC HBW with NACE MR0175 Ceiling

Understand HV, HRC and HBW hardness conversion per ASTM E140 and how the NACE MR0175 22 HRC ceiling applies to carbon steel pipe fittings.

Jun 5, 20266 min readHebei Haihao Group
气站图.jpgCase studies
Case studies

India City Gas Distribution Network Buildout Reference

PNGRB's 12th CGD round adds eight geographical areas with around Rs 41,000 crore investment. Reference for India city gas distribution piping demand.

Jun 4, 20269 min readHebei Haihao Group
万能拉力机.JPGBuyer guide
Buyer guide

Marking Standards MSS SP-25 Explained for Fitting Acceptance

MSS SP-25-2018 marking standard explained for pipe fitting and flange acceptance: required fields, marking methods, and a buyer audit checklist.

Jun 4, 20268 min readHebei Haihao Group
不锈钢管.jpgStandards
Standards

ASTM A312 vs A790 Austenitic vs Duplex Stainless Pipe Guide

ASTM A312 vs A790 explained for buyers: austenitic vs duplex stainless steel pipe, mechanical strength, corrosion resistance and selection logic.

Jun 3, 20267 min readHebei Haihao Group
全图片.JPGTechnical
Technical

Monel 400 and K-500 Pipe Fittings for Marine Saltwater Service

How to specify Monel 400 and Monel K-500 pipe fittings for seawater and marine service, including chemistry, pitting behaviour and procurement checklist.

Jun 3, 20267 min readHebei Haihao Group
化工厂.jpgCase studies
Case studies

Indonesia Tangguh Train 3 LNG Expansion Buyer Reference

BP's Tangguh LNG Train 3 in Papua Barat added 3.8 mtpa, taking total plant capacity to 11.4 mtpa. Reference for Indonesia LNG sourcing patterns.

Jun 2, 20269 min readHebei Haihao Group
接管座.jpgBuyer guide
Buyer guide

Bevel Preparation per ASME B16.25 Explained for Inspectors

ASME B16.25 buttwelding end bevel preparation explained for inspectors: angles, root face, internal taper, and a dimensional acceptance checklist.

Jun 2, 20268 min readHebei Haihao Group
不锈钢管.jpgStandards
Standards

NORSOK M-650 Manufacturer Qualification North Sea Guide

NORSOK M-650 explained: manufacturer qualification for duplex and high-alloy materials, scope, QTR documentation and how buyers should specify it.

Jun 1, 20267 min readHebei Haihao Group
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