What type of test certificate should I ask for?

Type 3.1 (manufacturer's inspection certificate with test results) is the most commonly specified for structural steel and reinforcement. Type 3.2 (third-party verified) is for critical applications.

What happens if a test fails?

IS 1387 allows retesting on double the number of samples from the same lot. If retests pass, the lot is accepted. If retests fail, the lot is rejected.

IS 1387:1993 — General Requirements for Supply of Metallic Materials

IS 1387 : 1993

General Requirements for Supply of Metallic Materials

EN 10204 · ASTM A6/A6M

CurrentFrequently UsedCode of PracticeGeneral · Testing Methods and Quality Control

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Summary

IS 1387 provides general requirements for supply of all metallic materials — the master standard for how metals should be ordered, inspected, tested, and certified. It covers test certificates, retesting rules, marking, and packaging. Referenced by every IS metal product specification.

General requirements for supply, inspection, testing, and certification of all metallic materials including steel, aluminium, copper, and their alloys.

Practical Notes

! IS 1387 defines the types of test certificates: Type 2.1 (declaration), 3.1 (inspection certificate), 3.2 (third-party inspection).

! When purchasing steel to IS 2062, the supply conditions are governed by IS 1387.

! Retesting rules are important — if a test fails, IS 1387 allows retesting on double the number of samples.

! Always specify the type of test certificate required in the purchase order.

Cross-Referenced Codes

IS 2062:2011Hot Rolled Medium and High Tensile Structural...

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IS 1786:2008High Strength Deformed Steel Bars and Wires f...

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IS 228:2018Methods for Chemical Analysis of Steels

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IS 1608:2005Mechanical Testing of Metals - Tensile Testin...

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IS 4905:1968Methods for Random Sampling

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