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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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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

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Europe

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SE Asia

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East Asia

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South Asia

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Americas

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Africa

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Oceania

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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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95 articles· Buyer guide

8字盲板 (2).jpgBuyer guide
Buyer guide

Metallic vs Nonmetallic Flange Gaskets: ASME RFQ Guide

Compare ASME B16.20 metallic and B16.21 nonmetallic flat gaskets, and clarify what each standard actually covers before you issue an RFQ.

Aug 20, 20266 min readHebei Haihao Group
p01_010_343936e3e2eaef1d3c6a0d2cf0887ddb.jpgBuyer guide
Buyer guide

ASME B16.10 Valve Face-to-Face Dimensions: An RFQ Checklist

Use this RFQ checklist to specify ASME B16.10 valve face-to-face dimensions correctly and avoid installation mismatches in your piping system.

Aug 15, 20267 min readHebei Haihao Group
中低压管件法兰 vs. 对焊管件法兰:如何选择?Buyer guide
Buyer guide

Low/Medium Pressure Flanges vs. Weld Neck Flanges: A Procurement Guide for EPC Buyers

Choosing between low/medium pressure flanges and weld neck flanges depends on system pressure, temperature, and application. This guide covers key differences, standards, inspection requirements, and RFQ best practices for global procurement professionals.

Jul 24, 20265 min readHebei Haihao Group
了解不锈钢法兰的特点和应用Buyer guide
Buyer guide

Procurement Guide for Stainless Steel Flanges: Key Features, Applications, and Selection Tips

Stainless steel flanges are critical for piping systems in demanding industries. This guide covers standards, inspection documents, RFQ essentials, and quality risks to help procurement engineers make informed decisions.

Jul 24, 20266 min readHebei Haihao Group
为何选择海浩高压法兰管件集团有限公司Buyer guide
Buyer guide

How to Source High-Pressure Flanges for EPC Projects: A Procurement Guide

A practical guide for EPC procurement engineers on sourcing high-pressure flanges, covering standards, inspection documents, RFQ checklist, quality risks, and pre-quotation information.

Jul 23, 20265 min readHebei Haihao Group
Procurement Guide for Figure-8 Blanks (Spectacle Blinds) and Pipe BendsBuyer guide
Buyer guide

Procurement Guide for Figure-8 Blanks (Spectacle Blinds) and Pipe Bends

A practical procurement guide for industrial buyers sourcing figure-8 blanks (spectacle blinds) and pipe bends. Covers applicable standards, material selection, inspection documents, quality risks, and a detailed RFQ checklist to ensure reliable pipeline components.

Jul 23, 20265 min readHebei Haihao Group
How to Procure Flanges for Wind Power Projects: A Buyer's GuideBuyer guide
Buyer guide

How to Procure Flanges for Wind Power Projects: A Buyer's Guide

Learn the key considerations when sourcing flanges for wind turbine installations, including standards, materials, inspection documents, and RFQ best practices.

Jul 22, 20268 min readHebei Haihao Group
Procurement Guide for Welded Neck Flanges: Specifications, Standards, and RFQ ChecklistBuyer guide
Buyer guide

Procurement Guide for Welded Neck Flanges: Specifications, Standards, and RFQ Checklist

A practical guide for EPC buyers on specifying welded neck flanges, including applicable standards, inspection documents, quality risks, and a checklist to include in your RFQ.

Jul 22, 20265 min readHebei Haihao Group
Procurement Guide: How to Specify Forged Pipe Fittings and Flanges for Medium and Low Pressure ApplicationsBuyer guide
Buyer guide

Procurement Guide: How to Specify Forged Pipe Fittings and Flanges for Medium and Low Pressure Applications

A practical guide for procurement engineers on specifying forged pipe fittings and flanges, including material selection, standards, inspection documents, and RFQ best practices.

Jul 21, 20266 min readHebei Haihao Group
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