Acceptance, packaging, marking, and quality certificate of steel pipes
2015-02-09
This standard specifies the acceptance, packaging, marking, and quality documentation for steel pipes (including seamless and welded steel pipes). When there are special provisions in the product standard, they should be followed according to the product standard. 1 Acceptance Rules 1.1 The quality inspection and acceptance of steel pipes shall be carried out by the supplier's technical quality supervision department. 1.2 The supplier must ensure that the delivered steel pipes comply with the relevant product standards. The buyer has the right to inspect and accept according to the relevant product standards. 1.3 Steel pipes should be submitted for acceptance in batches, and batch grouping rules should comply with the relevant product standards. 1.4 The inspection items, sampling quantity, sampling locations, and testing methods for steel pipes shall follow the relevant product standards. With the buyer's consent, hot-rolled seamless steel pipes can be sampled according to rolling root numbers in batches. 1.5 If any test result of a steel pipe does not meet the requirements of the product standard, non-conforming items should be identified, and double samples from the same batch of steel pipes should be randomly selected for re-inspection of non-conforming items. If any re-inspection result (including any index required by that item test) is non-conforming, then that batch of steel pipes shall not be delivered. For the following inspection items, re-inspection is not allowed if initial inspection fails: a. White spots in low magnification structure; b. Microstructure. 1.6 Steel pipes that fail re-inspection results (including initial inspection results where microstructure fails and projects where re-inspection is not allowed) may be submitted for acceptance by individual pieces; or undergo heat treatment again (the number of re-heat treatments shall not exceed two), proposing acceptance as a new batch. 1.7 If there are no special provisions in the product standard, chemical composition of steel pipes shall be accepted based on melting composition. 2 Packaging 2.1 Bundled Packaging 2.1.1 Steel pipes are generally delivered bundled together for packaging purposes; each bundle should consist of steel pipes from the same batch number (except those allowed by product standards). Each bundle of steel pipe should not exceed 5000 kg in weight. Steel pipes with an outer diameter greater than 159 mm or a cross-sectional perimeter greater than 500 mm can be delivered loose-packed. By agreement between both parties involved in supply and demand, each bundle's weight may exceed 5000 kg or small packages may also be delivered instead. 2.1.2 The form of bundled packaging for steel pipe is shown in Figures 1, 2, 3, and 4 respectively.
Shenyang Tengfei Iron Corporation
Shenyang Tengfei Steel Pipe Co., Ltd.
Address: No.6 A 3, No.13 Road, Economic and Technological Development Zone, Shenyang City, Liaoning Province
E-mail:tfwelcome@163.com
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