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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

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  • Elbow
  • Tee
  • Reducer
  • Flange
  • Pipe Bend

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  • Donglin, Mengcun County, Cangzhou City, Hebei Province, China
  • +86 132 9342 5333
  • 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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277 articles

8字盲板 (2).jpgStandards
Standards

ASME B16.36 Orifice Flanges: Types and Class Boundaries

ASME B16.36 covers orifice flanges for differential pressure flow measurement. Welding-neck types span Classes 300–2500, while slip-on and threaded are limited to Class 300. This guide explains scope, procurement checks, and common pitfalls.

Sep 3, 20266 min readHebei Haihao Group
翻边.jpgTechnical
Technical

Stub End and Lap Joint Flange Interface Checks

Check the ASME B16.9 stub end and ASME B16.5 lap joint flange as an assembly. Practical RFQ, inspection, and documentation points for EPC buyers.

Sep 2, 20266 min readHebei Haihao Group
化工厂.jpgCase studies
Case studies

Marsa LNG Oman: Electrified Liquefaction and Piping-System Reference

TotalEnergies and OQ's Marsa LNG project in Sohar, Oman, will use electric motors and a 300 MWp solar plant to produce one million tons of LNG per year. This case study examines the low-carbon design and what it means for piping procurement.

Sep 1, 20266 min readHebei Haihao Group
法兰管件图.jpgIndustry news
Industry news

Empire Wind 1 Financial Close: Procurement Lessons from an 810 MW Offshore Project

Equinor's Empire Wind 1 reached financial close with over USD 3 billion in project financing. For EPC buyers, this milestone signals a wave of offshore wind procurement. Learn what to verify before quoting flanges, fittings, and supports.

Aug 31, 20266 min readHebei Haihao Group
p01_003_011d8f3f6eb1f9fa4bca7f3145ecdfad.pngBuyer guide
Buyer guide

Matching ASME B16.11 Forged Fittings to Pipe Size and Schedule

Learn how to correctly match ASME B16.11 forged fittings to pipe size and schedule. Understand the relationship between fitting class and pipe schedule, and get practical procurement and inspection tips.

Aug 30, 20266 min readHebei Haihao Group
8字盲板 (2).jpgStandards
Standards

ASME B16.21 Nonmetallic Flat Gaskets: What the Standard Covers

ASME B16.21 defines dimensions, materials, and markings for nonmetallic flat gaskets used with ASME flanges. Learn what it covers, what it doesn't, and how to specify gaskets correctly.

Aug 29, 20265 min readHebei Haihao Group
合金弯头 (2).jpgTechnical
Technical

Braze-Joint vs Solder-Joint Copper Fittings: Buyer Guide

Understand the difference between ASME B16.50 braze-joint and ASME B16.22 solder-joint copper fittings, what to specify, and how to avoid procurement mistakes.

Aug 28, 20266 min readHebei Haihao Group
锻造.JPGCase studies
Case studies

GranMorgu Suriname FPSO: Piping Procurement Reference for EPC Buyers

GranMorgu, a deep-offshore oil project off Suriname, targets 220,000 b/d by 2028. This reference outlines what piping buyers should verify and how to prepare RFQs.

Aug 27, 20266 min readHebei Haihao Group
气站图.jpgIndustry news
Industry news

Nigeria HI Offshore Gas FID: Reading the Supply-Chain Signal Without Overclaiming

Shell's October 2025 FID on Nigeria's HI offshore gas development signals a potential uptick in deep-water piping demand. This article explains what is known, what remains unverified, and how EPC buyers can prepare without overclaiming.

Aug 26, 20265 min readHebei Haihao Group
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