기술기술
Bent-Beam and U-Bend Stress Corrosion Testing for Fitting Alloys
Understand ASTM G36 and G30 for stress-corrosion cracking screening of fitting alloys. Learn what to specify, inspect, and avoid in procurement.
2026년 11월 2일5 분Hebei Haihao Group
인사이트
인사이트 및 지식 센터
압력 배관 부품, 플랜지 및 단조 피팅에 관한 기술 자료, 규격 비교, 프로젝트 사례, 구매 가이드를 제공합니다.
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기술
구매 가이드구매 가이드
Export Pipe Fitting Packing: Corrosion Protection and CTU Checklist
A practical guide for EPC buyers and inspectors on export packing of pipe fittings, covering ASTM D3951, CTU Code, corrosion protection, and a pre-shipment checklist.
2026년 11월 1일5 분Hebei Haihao Group
표준표준
ISO 9606-1 Welder Qualification: What EPC Buyers Must Verify
ISO 9606-1 welder qualification proves an operator's skill within defined limits. Learn what records to check, how it differs from WPS/PQR, and key procurement risks.
2026년 10월 31일6 분Hebei Haihao Group
기술기술
Ferric Chloride Pitting Tests for Duplex Fittings: What Buyers Must Verify
ASTM G48 ferric chloride tests and ASTM A923 phase detection are complementary, not interchangeable. Learn what to specify, inspect, and verify when buying duplex fittings.
2026년 10월 30일5 분Hebei Haihao Group
구매 가이드구매 가이드
Duplex Stainless Fitting RFQ Checklist: ASTM A815 and A923
Specifying duplex stainless fittings requires more than grade and size. This guide explains ASTM A815 fitting classes, ASTM A923 intermetallic phase testing, and the RFQ details EPC buyers must define to avoid costly mismatches.
2026년 10월 29일5 분Hebei Haihao Group
표준표준
ISO 15614-1 Welding Procedure Qualification: Purpose and Limits
Understand the role of ISO 15614-1 in qualifying welding procedures for steel and nickel alloys, and learn what buyers must verify before accepting a WPS/PQR.
2026년 10월 28일6 분Hebei Haihao Group
기술기술
Intergranular Corrosion Tests for Austenitic and Ferritic Fittings
ASTM A262 and ASTM A763 detect intergranular attack in austenitic and ferritic stainless steels respectively. Learn which practice to specify, how to write RFQs, and what to check on test reports.
2026년 10월 27일5 분Hebei Haihao Group
구매 가이드구매 가이드
NDT Personnel Certificate Review: Method, Level, Sector and Scope
Verifying NDT personnel certificates is more than checking a name and expiry date. This guide explains the key elements—method, level, sector, and scope—and highlights the differences between ISO 9712, ASNT 9712, ASNT NDT, and employer-based SNT-TC-1A certifications.
2026년 10월 26일6 분Hebei Haihao Group
표준표준
ISO 7005-1 Steel Flanges: Series Selection and Scope
ISO 7005-1:2011 is a base specification for steel flanges in industrial and general service piping. It covers chemical, power, oil & gas applications, but leaves flange series selection to the purchaser. This guide explains the standard's scope, key differences from ASME B16.5, and procurement checks.
2026년 10월 25일6 분Hebei Haihao Group