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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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SE Asia

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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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152 articles

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
锻三通12.jpgTechnical
Technical

Titanium Grade 2 and Grade 12 Fittings for Chloride Service

Why titanium Grade 2 and Grade 12 buttweld fittings dominate chloride and seawater service, and how to specify them under ASME B31.3 piping codes.

Jun 1, 20267 min readHebei Haihao Group
对焊法兰 (2).jpgTechnical
Technical

ASTM A350 LF3 Chinese Equivalent: Why Buyers Should Not Match by Grade Name Alone

A buyer guide for A350 LF3 low-temperature forgings and Chinese-equivalent questions: compare chemistry, mechanical properties, impact temperature and project approval, not just grade names.

Jun 1, 20266 min readHebei Haihao Group
四大管道配管.JPGCase studies
Case studies

Petrobras Pre-Salt FPSO Topsides Procurement Reference

Petrobras is rolling out a deep wave of pre-salt FPSOs at Buzios and Mero with topsides modules built across Brazil, China, Korea and Singapore.

May 31, 20269 min readHebei Haihao Group
万能拉力机.JPGBuyer guide
Buyer guide

Hydrostatic Test Procedure for Pipe Fittings per ASME B31.3

ASME B31.3 hydrostatic test procedure for pipe fittings explained: pressure calculation, hold time, water quality and a buyer witness checklist.

May 31, 20269 min readHebei Haihao Group
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