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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

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  • Tee
  • Reducer
  • Flange
  • Pipe Bend

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

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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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312 articles

化工厂.jpgIndustry news
Industry news

Uaru Approval and the Fifth Stabroek FPSO Development: Official Facts for Buyers

ExxonMobil's Uaru project, the fifth Stabroek development, received final investment decision in April 2023. This article provides verified facts for procurement and engineering professionals, including capacity, investment, and timeline, with guidance on what to verify.

Sep 20, 20265 min readHebei Haihao Group
8字盲板 (2).jpgBuyer guide
Buyer guide

Orifice Flange RFQ Checklist: B16.36 Details Buyers Often Miss

ASME B16.36 orifice flanges have unique requirements beyond B16.5. This guide covers scope, procurement checks, inspection points, and common risks to help EPC engineers and buyers specify correctly.

Sep 19, 20266 min readHebei Haihao Group
法兰管件图.jpgStandards
Standards

ASME B16.14 Pipe Plugs, Bushings and Locknuts Explained

ASME B16.14 covers ferrous pipe plugs, bushings, and locknuts with pipe threads, including ratings, dimensions, materials, and marking. This guide explains the standard's scope, key differences from ASME B1.20.1, and what buyers must verify to avoid specification errors.

Sep 18, 20266 min readHebei Haihao Group
8字盲板 (2).jpgTechnical
Technical

Flange Facing and Gasket Compatibility Checklist

ASME publishes separate standards for metallic and nonmetallic gaskets. This checklist helps buyers cross-check gasket type, flange facing, and procurement details before issuing an RFQ.

Sep 17, 20265 min readHebei Haihao Group
化工厂.jpgCase studies
Case studies

LNG Canada First Cargo: A Source-Based Cryogenic Piping Reference

Shell announced the first cargo from LNG Canada in June 2025. This reference outlines what EPC buyers can learn about cryogenic piping procurement, with a disclaimer that Hebei Haihao Group has no project involvement.

Sep 16, 20266 min readHebei Haihao Group
化工厂.jpgIndustry news
Industry news

Whiptail Approval Adds a Sixth Stabroek Development to Guyana's Offshore Buildout

ExxonMobil has received government and regulatory approvals for the Whiptail development, the sixth project on the Stabroek block offshore Guyana. The project targets about 250,000 barrels per day of capacity by end-2027, with $12.7 billion investment. For EPC buyers, this signals continued demand for subsea and topside piping components.

Sep 15, 20265 min readHebei Haihao Group
IMG_1251.JPGBuyer guide
Buyer guide

Hydrogen Piping Components: What an ASME B31.12 RFQ Must Define

ASME B31.12 governs hydrogen piping and pipelines. This guide explains what EPC engineers and procurement managers must specify in an RFQ for seamless pipes and socket-weld forged fittings, covering code parts, material verification, and inspection requirements.

Sep 14, 20267 min readHebei Haihao Group
水暖管件.jpgStandards
Standards

ASME B16.1 Gray Iron Flanges: Classes 25, 125 and 250

ASME B16.1 covers gray iron flanges and flanged fittings in Classes 25, 125, and 250. This guide explains what the standard includes, how it differs from ductile iron (B16.42), and what buyers must verify when sourcing gray iron flanges.

Sep 13, 20266 min readHebei Haihao Group
八角垫环.jpgTechnical
Technical

ASME B16.21 Nonmetallic Flat Gasket Selection Guide

ASME B16.21 defines nonmetallic flat gaskets for pipe flanges. This guide explains the standard's scope, why you must pair it with the mating flange standard, and what to verify during procurement to avoid misapplication.

Sep 12, 20266 min readHebei Haihao Group
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