ASTM A270 Welded Stainless Steel Pipes, Tubes and Tubing For Pharmaceutical Machinery Parts
Product Description:
ASTM A270 standard is about Seamless and Welded Austenitic and Ferritic/Austenitic Stainless Steel Sanitary Pipes/Tube.ASTM A270 standard covers grades of seamless, welded, and heavily cold worked welded austenitic and ferritic/austenitic stainless steel sanitary pipes/tubes intended for use in the dairy and food industry and having special surface finishes. Pharmaceutical quality may be requested, as a supplementary requirement.According to ASTM A270, arithmetic average surface roughness normally reported in microinches or microns; a measurement of surface roughness usually performed by moving a stylus in a straight line along the surface, although other methods may be used. In ASTM A270 Standard, for stainless steel pipes/tubes with a specified wall thickness of 0.049 in. (1.24 mm) and greater, variations in outside diameter from those specified shall not exceed the amount prescribed in ASTM A270 Table 2. For stainless steel pipes/tubes with a specified wall thickness less than 0.049 in. (1.24 mm), the diameter tolerances shall be a matter for agreement by the manufacturer and the purchaser. When stainless steel pipes/tubes >4 in. (101.6 mm) outside diameter is ordered, additional ovality may be required for thin wall stainless steel pipes/tubes . Thin wall stainless steel pipes/tubes applies when the specified wall is less than 0.150 in. (3.81 mm). When thin wall tubing is ordered, the maximum and minimum outside diameter at any cross section shall deviate from the specified outside diameter by no more than twice the permissible variation in outside diameter given in ASTM A270 Table 2; however, the mean diameter at that cross section must still be within the given permissible variation.1) Material of stainless steel:
201(approx 0.8-1.1% Nickel, 14.5-16% Chromium)
202(approx 3.5-5.5% Nickel, 15--16% Chromium)
304(approx 7.8-9% Nickel, 17-19% Chromium)
316L(approx 10-12% Nickel, 15-17% Chromium,
1-2.5% molybdenum and ≤0.03% Carbon)
And so on. The original materials import form India, Korea and Taiwan, Such as YUSCO, BNG, POSCO and JINDAL.
2) Process method: Cold drawn, Annealing, Pickling, Inner Bead Removed, Inner Polishing, Polishing.
3) Standards: ASTM A270
About Us
Meiya Stainless Steel Co., Ltd. is located in Dali, a well-known town of stainless steel in China, which is also a nonferrous metal processing and stainless steel production base. Since the establishment in 1996, Meiya, which specializes in manufacturing of stainless steel welded pipes, has become a leading supplier in this industry and developed a large number of technicians and administrative personnel. The factory occupies an area of over 15,000 square meters and has an annual yield of more than ten thousand metric tons. Sticking to the enterprise spirit of "Quality is the life of an enterprise", we've guaranteed high quality and won a reputation among customers. Dozens of products in more than 500 specifications have been outputted to Southeast Asia, Europe, America, Mid-East and Africa in each year, which are widely applied to construction, decoration, mechanism, chemical industry, petroleum industry, water and liquid conservancy, food industry and sanitation.We continually upgrade our facilities, provide employee training, and focus on supplying competitive prices and in-time delivery. We are also glad to fulfill clients' customized orders and are experienced in OEM business. We expect to create a brilliant future hand in hand with you. Please feel free to contact us for more information.
