Since 1982 · Pressure piping components manufacturerReply in 4 h+86 132 9342 5333haihaojituan@163.com
Hebei Haihao Group Huadian High Pressure Pipe Fittings Co., Ltd.
HomeProductsStandardsApplication ScenariosInsightsCertificatesAboutContact
Get a quote
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

  • About
  • Application Scenarios
  • Certificates
  • Contact

Services

  • Send inquiry
  • Material reference
  • Insights
  • Feedback

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

🇸🇦SAU🇦🇪ARE🇶🇦QAT🇰🇼KWT🇴🇲OMN🇮🇶IRQ🇹🇷TUR

CIS

🇷🇺RUS🇰🇿KAZ

Europe

🇩🇪DEU🇫🇷FRA🇮🇹ITA🇪🇸ESP🇬🇧GBR🇳🇱NLD

SE Asia

🇮🇩IDN🇲🇾MYS🇸🇬SGP🇻🇳VNM

East Asia

🇰🇷KOR🇯🇵JPN

South Asia

🇮🇳IND🇵🇰PAK

Americas

🇺🇸USA🇨🇦CAN🇲🇽MEX🇧🇷BRA🇨🇱CHL🇦🇷ARG

Africa

🇪🇬EGY🇿🇦ZAF

Oceania

🇦🇺AUS🇳🇿NZL

© 2026 Hebei Haihao Group Huadian High Pressure Pipe Fittings Co., Ltd. · All rights reserved.

PrivacyTermsEstablished 1982 · Mengcun, Hebei, China

Insights

Insights & Knowledge Center

Technical articles, standards comparisons, project case studies and buyer guides on pressure piping components, flanges and forged fittings.

Found us via Google? Get an ASTM/ASME pipe-fittings quote in 4 hours.

Send RFQ→
AllTechnicalStandardsCase studiesIndustry newsCompany newsBuyer guide

232 articles

接管座.jpgStandards
Standards

ASME II Part D Allowable Stress Lookup Explained for Buyers

ASME Section II Part D allowable stress lookup explained for procurement engineers: tables 1A, 1B, 3, derivation rules, and how to use them on a data sheet.

Jun 7, 20267 min readHebei Haihao Group
双金属耐磨弯头 .jpgTechnical
Technical

Hydrogen Induced Cracking HIC Mechanism and HIC-Resistant Steel

How hydrogen induced cracking forms in pipeline steels, what NACE TM0284 measures and how to specify HIC-resistant pipe and fittings for sour service.

Jun 7, 20268 min readHebei Haihao Group
化工厂.jpgCase studies
Case studies

Egypt Refining Company ERC Mostorod Hydrocracker Reference

ERC's Mostorod hydrocracker complex processes ~4.7 mtpa, producing Euro V diesel and jet fuel near Cairo. Reference for Middle East refinery sourcing.

Jun 6, 20269 min readHebei Haihao Group
万能拉力机.JPGBuyer guide
Buyer guide

Sour Service Welding WPS PQR Buyer Guide: NACE MR0175 Hardness

Sour service welding WPS and PQR requirements for buyers under NACE MR0175 / ISO 15156, including the 22 HRC hardness limit and survey methods.

Jun 6, 202610 min readHebei Haihao Group
不锈钢管.jpgStandards
Standards

ASTM A106 vs A53 Carbon Steel Pipe Seamless vs Welded Guide

ASTM A106 vs A53 carbon steel pipe explained for buyers: seamless vs welded manufacturing, silicon content, service limits and decision guide.

Jun 5, 20267 min readHebei Haihao Group
全图片.JPGTechnical
Technical

Hardness Conversion HV HRC HBW with NACE MR0175 Ceiling

Understand HV, HRC and HBW hardness conversion per ASTM E140 and how the NACE MR0175 22 HRC ceiling applies to carbon steel pipe fittings.

Jun 5, 20266 min readHebei Haihao Group
气站图.jpgCase studies
Case studies

India City Gas Distribution Network Buildout Reference

PNGRB's 12th CGD round adds eight geographical areas with around Rs 41,000 crore investment. Reference for India city gas distribution piping demand.

Jun 4, 20269 min readHebei Haihao Group
万能拉力机.JPGBuyer guide
Buyer guide

Marking Standards MSS SP-25 Explained for Fitting Acceptance

MSS SP-25-2018 marking standard explained for pipe fitting and flange acceptance: required fields, marking methods, and a buyer audit checklist.

Jun 4, 20268 min readHebei Haihao Group
不锈钢管.jpgStandards
Standards

ASTM A312 vs A790 Austenitic vs Duplex Stainless Pipe Guide

ASTM A312 vs A790 explained for buyers: austenitic vs duplex stainless steel pipe, mechanical strength, corrosion resistance and selection logic.

Jun 3, 20267 min readHebei Haihao Group
PreviousPage 9 of 26Next