1 stainless steel identification method. Steel number and representation ① chemical element symbols with international and national symbols to represent the chemical composition of the Arabic alphabet to represent the content: Such as: China, Russia 12CrNi3A ② with a fixed number of digits to represent the types of steel series or digital; as : The United States, Japan, 300 series, 400 series, 200 series; ③ composition of the Latin alphabet and the order number, saying only that purpose. 1. The number of rules ① using element symbols ② use Hanyu Pinyin, open-hearth steel: P, boiling steel: F, killed steel: B, Group A steel: A, T8: Special 8, GCr15: Ball ◆ structural steel, spring steel such as: 20CrMnTi 60SiMn, (C content represented by a few births) ◆ stainless steel, alloy tool steel (with a few thousandths C content), such as: 1Cr18Ni9 thousandth (ie 0.1% C), stainless C≤ 0.08% as 0Cr18Ni9, ultra-low carbon C≤0.03% as 0Cr17Ni13Mo 2. International stainless American Iron and Steel Institute identification method is used to mark a variety of standard three-digit level of wrought stainless steel. Notes: ① austenitic stainless steel with 200 and 300 series of numerals, for example, some of the more common austenitic stainless steel is 201, 304, 316 and 310 as a mark ② ferritic and martensitic stainless steel 400 Digital family represents. ③ ferritic stainless steel is marked 430 and 446, 410, 420, and 440C martensitic stainless steel is marked, two-phase (austenite - ferrite). ④ stainless steel, precipitation hardening stainless steel and high-alloy iron content of less than 50% usually uses proprietary name or trademark name. My company mainly produces: stainless steel pipe, shaped tube, pipe, groove tube, flat oval tube, oval tube, a tapered pipe and other types of stainless steel pipe, used in various industries. A: Specifications (special specifications can be customized): 1. stainless steel pipe: φ3.0-φ273mm Thickness: 0.3 ~ 6.0mm; 2. stainless steel tube: 3 * 3-200 * 200 mm Thickness: 0.3 ~ 6.0mm; 3. Stainless steel rectangular tube: 4 * 6-125 * 200 mm Thickness: 0.3 ~ 6.0mm; 4. Stainless steel oval tube: 6 * 10-155 * 270mm thickness: 0.3-5.0mm; 5. Stainless steel flat oval tube: 4 * 18-63 * 172mm thickness: 0.3-5.0mm 6. Stainless Steel Pipes: 1 Pipes: trapezoidal pipe, tube pentagonal, hexagonal tube, triangle tube, semi-circular tube, pipe arch, two arch tubes, bread shaped tube, handrails, fan control, lip tube, D-shaped tube, trapezoidal pipe, rectangular tube, pipe groove, flat arc tube, the small size of non-standard rectangular tube, diamond pipe; melon-shaped tube, case control, armrest tube, stair handrails, handle series pipe, stove pipe, four Plum tube, oval tube, flat oval pipe, stainless steel decorative tube, bellows, embossed tube, core pulling elbow, pipe thread, conical tubes, bamboo Section flower tubes; 7. steel groove tube: 1, Single stainless steel pipe: round Single tube, square Single tube, rectangular tube Single, oval Single tube; 2, dual stainless steel pipe (180 ° groove tube): Round-slot tube, square tube-slot, dual-slot rectangular tube; two: wall thickness. Standard thickness: 0.5-5.0mm solid thick: 0.3-4.6mm Gloss: specular (polished inside and outside); sanding, drawing (80 # -400 #), Matt. NOTE: Other Size of a quantitative 15000m, can mold free of charge direct production; if ordered installments must first pay mold fee. Quantitative tooling costs will be refunded up to 15000m