Stainless steel Profile tube is a hollow strip of steel, because the cross-section is square so called square tube. A large number of pipelines used to transport fluids, such as oil, natural gas, water, gas, steam, etc., in addition, in bending, torsional strength at the same time, light weight, so it is also widely used in the manufacture of mechanical parts and engineering structures. Stainless steel Profile pipe classification: square pipe is divided into seamless steel pipe and welded steel pipe (welded pipe) two categories. According to the section shape can be divided into square and rectangular pipe, widely used is round steel pipe, but there are also some semicircular, hexagonal, equilateral triangle, octagonal and other special-shaped steel pipe. For the stainless steel Profile pipe under fluid pressure, hydraulic tests should be carried out to test its pressure resistance and quality, and no leakage, wetting or expansion under the specified pressure is qualified, and some steel pipes should also be crimping test, flaring test, flattening test, etc., according to standards or requirements of the demander.

Grade	C≤	Si≤	Mn≤	P≤	S≤	Ni	Cr
201	0.15	1	5.50-7.50	0.5	0.03	3.50-5.50	16.00-18.00
202	0.15	1	7.50-10.00	0.5	0.03	4.00-6.00	17.00-19.00
304	0.08	1	2	0.045	0.03	8.00-11.00	18.00-20.00
304L	0.03	1	2	0.045	0.03	8.00-12.00	18.00-20.00
309	0.2	1	2	0.04	0.03	12.00-15.00	22.00-24.00
309S	0.08	1	2	0.045	0.03	12.00-15.00	22.00-24.00
310	0.25	1	2	0.04	0.03	19.00-22.00	24.00-26.00
310S	0.08	1	2	0.045	0.03	19.00-22.00	24.00-26.00
316	0.08	1	2	0.045	0.03	10.00-14.00	16.00-18.00
316L	0.03	1	2	0.045	0.03	10.00-14.00	16.00-18.00
316Ti	0.08	1	2	0.045	0.03	10.00-14.00	16.00-18.00
410	0.15	1	1	0.04	0.03	0.6	11.50-13.50
430	0.12	0.12	1	0.04	0.03	0.6	16.00-18.00

5*5~150* 150mm Thickness :0.4~ 6.0mm304, 304L, TP304, TP316L, 316, 316L, 316Ti, 321, 347H, 310SQ1:How about the shipping fees? The cost of shipping will vary based on several factors. If you need your order to be delivered quickly, express shipping would be the fastest option but may come at a higher cost. On the other hand, sea freight is a more economical choice for larger quantities, although it typically takes longer for delivery. For accurate shipping quotes, please reach out to us with details such as the quantity, weight, preferred mode of transportation, and destination. Our team will be happy to assist you further. Q2:What are your prices? Please note that our prices fluctuate based on supply and various market factors. In order to provide you with the latest pricing information, we kindly ask you to contact us for more details. We will send you an updated price list as soon as we receive your inquiry. Thank you for your understanding and we look forward to assisting you. Q3:Do you have a minimum order quantity? We do have minimum order requirements for certain international products. For more details on minimum order requirements, please contact us directly. We will be more than happy to provide you with the necessary information.