1. Can your welded pipes be used for drinking water supply?
Yes. We provide food-grade welded pipes (such as 304 stainless steel welded pipes) that meet international food safety standards (such as FDA, ISO 22000). The inner surface of the pipes is smooth, non-toxic and corrosion-resistant, which is suitable for drinking water supply systems.
2. Are your welded pipes compliant with international standards?
Absolutely. Our welded pipes comply with various international standards, including API 5L (for oil and gas pipelines), ASTM A53, ASTM A312 (for stainless steel pipes), EN 10217 (European standard), GB/T 3091 (Chinese standard), etc. We can provide test reports and certification documents.
3. What is the length of your standard welded pipes?
The standard length is 6 meters, 9 meters or 12 meters. We can also produce pipes with custom lengths (such as 3 meters, 10 meters) according to your requirements, with no extra charge for general length customization.
4. How do you ensure the quality of the welds?
We adopt strict quality control measures: 1) Raw material inspection (chemical composition and mechanical properties test); 2) Online welding monitoring (current, voltage and speed control); 3) Post-welding inspection (X-ray flaw detection, ultrasonic flaw detection, pressure test, etc.); 4) Sampling inspection of finished products to ensure that the welds are free of cracks, inclusions and other defects.
5. Can welded pipes be used in high-temperature environments?
Yes. For high-temperature environments (such as above 300℃), we recommend using alloy steel welded pipes (such as 12Cr1MoV) or high-temperature resistant stainless steel pipes (such as 310S). These pipes have good high-temperature strength and oxidation resistance, which can work stably in high-temperature conditions.
