Steel Price, Peng Jian steel (certified), Dongguan City, Guangdong steel supplied by Peng Jian Steel Limited. Steel Co., Ltd., Dongguan City, Peng Jian (dgpengjian.cn) is specialized in the "Steel" of the enterprise, the company adhering to the "honesty, hard service" concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Mr. Xu. (1) a large number of steel sandwich quality issues that exist within the steel itself in the rolling process, has exceeded the national standards requirements, you can request sent to verify mills, steel mills in consultation with the return or exchange treatment; (2) if the number is less sandwich technology sector and the owners can seek advice, feedback to the mills, to take remedial measures on construction problems, according to the results of non-destructive testing, the problematic parts used gouging All away with more than the depth of the steel structure itself, and then filled the welding material of equal strength steel processing, after the completion of the surface treatment, after a predetermined time for NDT inspection of steel structure design, while members of the same physical and chemical sampling inspection, to meet the design specifications can continue to use; (3) Under the supervision of the parts cut off the witness steel project, again to meet the conditions put on the plate, replaced parts for non-load-bearing and non-critical parts or DPM to use as a post at a predetermined time after the completion of NDT inspection, make a record. Construction quality steel construction standards for acceptance of a steel works GB50205-2001 2 steel engineering quality assessment scale overhaul GB 50221-1995 3 Steel production process planning DBJ 08-216-95 Shanghai specification 4 grid structure engineering quality assessment scale overhaul JGJ78-1991 5 tower mast steel construction and acceptance of CECS80: 96 9 Inspection and Acceptance scale steel truss JGJ74.2-1991 10 steel truss mass scale JGJ74.1-1989 11 welders technical examination procedures JJ12.2-1987 12 steel melting Hand soldering welder qualification assessment methods GB / T 15169-1994 13 Steel Works common problem and manage TB-04 14 Pre-steel construction quality control YK-04