The main products

Spare parts spare parts, the DCS control system of PLC system and the robot system spare parts,

Brand advantage: Allen Bradley, BentlyNevada, ABB, Emerson Ovation, Honeywell DCS, Rockwell ICS Triplex, FOXBORO, Schneider PLC, GE Fanuc, Motorola, HIMA, TRICONEX, Prosoft etc. Various kinds of imported industrial parts

Products are widely used in metallurgy, petroleum, glass, aluminum manufacturing, petrochemical industry, coal mine, papermaking, printing, textile printing and dyeing, machinery, electronics, automobile manufacturing, tobacco, plastics machinery, electric power, water conservancy, water treatment/environmental protection, municipal engineering, boiler heating, energy, power transmission and distribution and so on.

LWN1902-6 input logic module

2 Inspection and testing of !bent" and electric welded flanges or collars from formed bars, sectional steel or band material a) Welded joints shall be visually examined in accordance with !EN ISO 17637" before any other NDT is performed. Acceptance criteria in accordance with EN ISO 5817 surface imperfections level C. b) The area to be examined shall include the weld metal and the heat affected zones. c) All base material for these flanges, such as plates or flat products shall be inspected ultrasonically according to EN 10160. Scope of test according to EN 10160:199, Table 3, acceptance criteria Class S2 and EN 10160:1999, Table 5 Class E3.Flanges made of steels in Material Groups 1E0, 1E1, 2E0 and 3E1 !shall be subjected" by the flange manufacturer to ultrasonic testing or to radiographic testing with reference to Table 5 to the extend defined in Table 5. As a rule, flanges that are produced by continuous welding with the same machine setting are grouped together to form a test batch. e) Finished flanges of all other material groups !shall be subjected" by the flange manufacturer to ultrasonic inspection or to radiographic inspection in the weld zone according to Table 5 on each flange.

Non-destructive testing

 The testing of formed parts shall include on each component or batch of identical components (dependent on the material and size of flange), if appropriate:  wall thickness measurements;  dimensional checks  hardness tests (e.g. carbon and low alloy steels);  ultrasonic testing for internal imperfections in longitudinal and transversal direction (e.g. for thickness above 8 mm);  examination for surface or near surface imperfections (MT or PT). Material, heat treatment conditions, heat treatment lot, degree of deformation shall be considered in the definition of the batch (see e.g. EN 10253 standards). 5.12.3.2 Destructive testing for heat treated or hot formed components Testing shall be performed to verify the heat treatment of the formed parts, and shall include the tests required by the base material specification One set of test per cast, wall thickness range and heat treatment lot shall be performed for flanges and collars with PN × DN > 1 000 bar and DN > 25. The tests shall be performed on test pieces from the component itself, or from test pieces placed together with the components in the heat treatment furnaces. The test results shall fulfil the mechanical properties of the material standard.

Inspection and testing of other materials

 Flanges made of forgings, casts, bars, pressed and seamless rolled materials shall be inspected and tested by the material manufacturer in accordance with the appropriate material standard. 5.13 Certificates The flange manufacturer shall use respective procedures to ensure traceability of material and to avoid material exchange and shall be able to provide respective documentation for the base material used. Under consideration of EN 764-5, the purchaser of the flange may require a test certificate according to EN 10204:2004 (2.1, 3.1 or 3.2), applicable for the respective category. The rules of Directive 97/23/EC and the product specification, which includes the technical delivery conditions, shall be applied. If an inspection certificate 3.1 is required, the quality system of the material manufacturer must fulfil the ESRs in the third paragraph of section 4.3 of Annex I of Directive 97/23/EC.

Unless otherwise specified, for flanges in accordance with this European Standard the welding end connections given in Figures A.1 to A.3 shall be used. Additional types of welding ends are specified in EN ISO 9692-2 and example of designs in EN 1708-1 and may be used by agreement between the component or pressure equipment manufacturer and the flange manufacturer.