Selecting the correct radiographic examination standard matters: ASTM E94/E94M is a general guide for film radiography, while ASTM E1030/E1030M is the casting-specific practice. Know the difference and what to verify before you specify.

٨ نوفمبر ٢٠٢٦8 دقيقةHebei Haihao Group

تقني

Ultrasonic Examination of Steel Forgings for Fittings and Flanges

ASTM A388/A388M and ASTM E114 are key standards for ultrasonic examination of steel forgings. Learn what they cover, why acceptance criteria must be stated in the order, and what procurement engineers must verify.

٧ نوفمبر ٢٠٢٦5 دقيقةHebei Haihao Group

تقني

Ultrasonic Thickness Testing on Curved Pipe Fittings

ASTM E797 covers ultrasonic thickness measurement but has limited applicability on curved fittings. Learn key variables, procurement checks, and inspection requirements for elbows, tees, and reducers.

٦ نوفمبر ٢٠٢٦5 دقيقةHebei Haihao Group

تقني

Galvanic Series Checks for Dissimilar-Metal Fitting Assemblies

ASTM G82 and G71 provide structured guidance for predicting and evaluating galvanic corrosion. Learn how to apply them when procuring pipe fittings and flanges for mixed-metal systems.

٥ نوفمبر ٢٠٢٦5 دقيقةHebei Haihao Group

تقني

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.

٢ نوفمبر ٢٠٢٦5 دقيقةHebei Haihao Group

تقني

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.

٣٠ أكتوبر ٢٠٢٦5 دقيقةHebei Haihao Group

تقني

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.

٢٧ أكتوبر ٢٠٢٦5 دقيقةHebei Haihao Group