Welded steel pipes refer to steel pipes with joints on the surface that are formed by bending and deforming steel strips or steel plates into circular、 square、 or other shapes. The billet used for welding steel pipes is steel plates or strips. According to different welding methods、 it can be divided into arc welded pipes、 high-frequency or low-frequency resistance welded pipes、 gas welded pipes、 furnace welded pipes、 Bondi pipes、 etc. Welded steel pipe: used in petroleum drilling and mechanical manufacturing industries. Furnace welded pipes: can be used as water and gas pipes、 and large-diameter straight seam welded pipes are used for high-pressure oil and gas transportation、 etc; Spiral welded pipes are used for oil and gas transportation、 pipe piles、 bridge piers、 etc p>
Function of testing report:
1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report
2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms 3. Used as a sales report: issuing legally effective testing reports to make consumers more confident 4. Papers and research: Provide professional personalized testing needs 5. Judicial services: providing scientific、 fair、 and accurate testing data 6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problemsinspection and testing process:
1. Telephone communication and confirmation of requirements
2. Recommend solutions and confirm quotations 3. Mail samples and arrange testing 4. Progress tracking and result feedback 5. Provide reports and after-sales service 6. If urgent or priority processing is requiredTesting and testing characteristics:
1. The testing industry is fully covered、 meeting different testing needs
2. Fully cover the laboratory and allocate localized testing nearby3. Engineers provide one-on-one services to make testing more accurate
4. Free initial testing、 with no testing fees charged
5. Self service order delivery for free on-site sampling
6. Short cycle、 low cost、 and attentive service 7. Possess authoritative qualifications such as CMA、 CNAS、 CAL、 etc 8. The testing report is authoritative and effective、 and is generally used in China