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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
  • +8613293425333💬 chat
  • 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

气站图.jpgCase studies
Case studies

Johan Castberg at Plateau: A Barents Sea Piping Reliability Reference

Equinor's Johan Castberg FPSO reached peak production in June 2025, three months after startup. This case study examines the project's scale and what it implies for cold-region piping procurement.

Sep 11, 20266 min readHebei Haihao Group
双金属耐磨弯头 .jpgIndustry news
Industry news

Rovuma LNG Enters FEED: What Is Confirmed About the Mozambique Development

ExxonMobil and Area 4 co-venturers have entered FEED for the 18 MTA Rovuma LNG project in Mozambique. This article clarifies what is confirmed, what remains unconfirmed, and what EPC buyers should verify before procurement.

Sep 10, 20266 min readHebei Haihao Group
管件总图.jpgBuyer guide
Buyer guide

Buttweld Spool Fit-Up: Coordinating ASME B16.9 Fittings and B16.25 Ends

Learn how to coordinate ASME B16.9 fittings with B16.25 bevel ends for reliable buttweld spool fit-up. Includes procurement checks, inspection points, and common risks.

Sep 9, 20266 min readHebei Haihao Group
S形弯管.jpgStandards
Standards

ASME B16.49 Induction Bends: Scope and Procurement Guide

ASME B16.49 covers factory-made induction bends for transportation and distribution piping (B31.4, B31.8, B31.11). It is not for process or power piping. This guide explains scope, key requirements, and procurement checks.

Sep 8, 20266 min readHebei Haihao Group
八角垫环.jpgTechnical
Technical

ASME B16.20 Metallic Gasket Selection for Flanged Joints

Learn how to select ASME B16.20 metallic gaskets for pipe flanges, verify compatibility with ASME B16.5 flanges, and avoid procurement pitfalls.

Sep 7, 20267 min readHebei Haihao Group
化工厂.jpgCase studies
Case studies

Bacalhau Phase 1: A Deepwater Brazil FPSO Piping Reference

Equinor's Bacalhau Phase 1 in Brazil's Santos Basin is a landmark ultra-deepwater FPSO project. This reference guide for EPC engineers and procurement managers covers key facts, procurement considerations, and inspection points for piping systems in similar high-pressure, high-CO2 environments.

Sep 6, 20265 min readHebei Haihao Group
化工厂.jpgIndustry news
Industry news

Northern Lights Phase 2 FID Expands CO2 Transport and Storage Chain

Equinor, Shell, and TotalEnergies have taken FID on Northern Lights phase 2, boosting injection capacity to at least 5 Mtpa by 2028. This article explains the expansion scope, procurement implications, and what buyers must verify for CO2 piping systems.

Sep 5, 20265 min readHebei Haihao Group
中频弯管机.jpgBuyer guide
Buyer guide

Valve End Connections and Mating Flanges: A B16.34 and B16.5 Buying Guide

Understand how ASME B16.34 and B16.5 interact for valve-to-flange compatibility. Learn key procurement checks, RFQ inputs, and inspection points to avoid mismatches.

Sep 4, 20266 min readHebei Haihao Group
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
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