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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

Company

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  • Certificates
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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

Middle East

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CIS

🇷🇺RUS🇰🇿KAZ

Europe

🇩🇪DEU🇫🇷FRA🇮🇹ITA🇪🇸ESP🇬🇧GBR🇳🇱NLD

SE Asia

🇮🇩IDN🇲🇾MYS🇸🇬SGP🇻🇳VNM

East Asia

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South Asia

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Americas

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Africa

🇪🇬EGY🇿🇦ZAF

Oceania

🇦🇺AUS🇳🇿NZL

© 2026 Hebei Haihao Group Huadian High Pressure Pipe Fittings Co., Ltd. · All rights reserved.

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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263 articles

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
8字盲板 (2).jpgStandards
Standards

PED 2014/68/EU Compliance: What Fittings Buyers Must Verify

PED 2014/68/EU compliance for piping and fittings: scope, hazard categories, conformity assessment modules and the documentation buyers must demand.

May 30, 20268 min readHebei Haihao Group
不锈钢管.jpgTechnical
Technical

9% Nickel Steel Pipe and Fittings for Cryogenic LNG Service

How 9% nickel steel grades to ASTM A553 Type I and matching pipe to A333 Gr 8 enable LNG and cryogenic piping down to -196 degC, with buyer guidance.

May 30, 20268 min readHebei Haihao Group
化工厂.jpgCase studies
Case studies

Cheniere Sabine Pass LNG Train 7 8 Expansion Reference

Cheniere's SPL Expansion Project adds Train 7 plus Trains 8 and 9 at Sabine Pass for ~20 mtpa. FID guidance late 2026 to 2027 per public reporting.

May 29, 20269 min readHebei Haihao Group
万能拉力机.JPGBuyer guide
Buyer guide

Hardness Testing Forgings: Brinell, UCI, Vickers, Rockwell Guide

Brinell, UCI, Vickers, and Rockwell hardness testing for pipe fitting forgings explained: ASTM standards, when to use each, and how to read results.

May 29, 20269 min readHebei Haihao Group
8字盲板 (2).jpgStandards
Standards

JIS B2220 Japanese Flange Standards for Export to Japan

JIS B2220 Japanese flange standard explained: 5K to 40K pressure classes, materials, configurations and procurement checklist for export to Japan.

May 28, 20267 min readHebei Haihao Group
法兰管件图.jpgTechnical
Technical

Hastelloy C-276 vs C-22 Pipe Fittings: Service and Welding

Compare Hastelloy C-276 and C-22 pipe fittings on chromium content, pitting resistance, wet chlorine performance and weld metallurgy for procurement engineers.

May 28, 20267 min readHebei Haihao Group
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