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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

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Contact

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

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· Shipping to projects in

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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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34 articles· Technical

全图片.JPGTechnical
Technical

ASME B16.52 Nonferrous Forged Fittings and Copper Alloy Checks

Understand the difference between ASME B16.52 for nonferrous forged fittings and ASTM B283/B283M for copper alloy die forgings, plus RFQ and inspection guidance.

Aug 18, 20266 min readHebei Haihao Group
全图片.JPGTechnical
Technical

Socket-Weld Fitting Dimensions and Material Checks

Confirm socket-weld fitting dimensions per ASME B16.11 and material to ASTM A105. Learn what to specify, inspect, and include in the RFQ.

Aug 13, 20265 min readHebei Haihao Group
渗透检测(PT).JPGTechnical
Technical

PT vs MT for Weld Pores: Which NDT Method Should Buyers Specify?

PT and MT are both surface inspection methods, but they do not solve every pore or weld defect problem. Learn when PT, MT, UT or RT should be specified.

Aug 12, 20266 min readHebei Haihao Group
中低压管件法兰定制,海浩法兰管件集团为您提供解决方案Technical
Technical

Procurement Guide for Custom Medium-Low Pressure Flanges and Fittings

Source customized flanges and fittings for medium-low pressure applications? Learn key standards, RFQ checklist, inspection documents, and quality risks to avoid procurement pitfalls.

Jun 24, 20265 min readHebei Haihao Group
锻制管件在航天应用中的重要性Technical
Technical

Forged Pipe Fittings in Aerospace: Procurement Considerations for Critical Systems

Learn about the critical role of forged pipe fittings in aerospace and key procurement factors including materials, standards, and quality assurance for EPC buyers.

Jun 23, 20266 min readHebei Haihao Group
锻制管件在风电领域中的作用Technical
Technical

Forged Pipe Fittings in Wind Energy: A Procurement Guide for EPC Engineers

How to specify, inspect, and procure forged fittings for wind turbine towers and nacelles. Key standards, quality risks, and RFQ checklist.

Jun 22, 20264 min readHebei Haihao Group
锻制管件是工业领域中的重要元件Technical
Technical

Procurement Guide for Forged Pipe Fittings: Standards, Quality Checks, and RFQ Best Practices

Learn what EPC buyers need to verify when sourcing forged pipe fittings—from material standards and forging grades to inspection documents and RFQ checklists.

Jun 21, 20266 min readHebei Haihao Group
Selecting the Right Material for Medium and Low Pressure Pipe Flanges: A Procurement GuideTechnical
Technical

Selecting the Right Material for Medium and Low Pressure Pipe Flanges: A Procurement Guide

A technical guide for procurement engineers on choosing carbon steel, cast iron, or stainless steel flanges for medium and low pressure applications, including standards, inspection requirements, and RFQ checklist.

Jun 20, 20265 min readHebei Haihao Group
How High Pressure Flanges Are Manufactured: A Procurement Guide for Quality AssuranceTechnical
Technical

How High Pressure Flanges Are Manufactured: A Procurement Guide for Quality Assurance

Understand the precision manufacturing process of high pressure flanges, key quality checks, and what to specify in your RFQ to ensure reliable performance in critical applications.

Jun 19, 20268 min readHebei Haihao Group
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