Seamless austenitic stainless steel pipe/tube, Seamless duplex stainless steel pipe/tube, U tubes
Huzhou Gaolin Stainless Steel Tube Manufacture Co., Ltd. is a professional manufacturer of ASTM A213 or ASME SA213 stainless steel tubes.
There are many materials listed in ASTM A213 standard. But we cannot produce carbon steel tubes. Our products have following properties.
Materials: TP304/304L/304H/304LN, TP310S/310H, TP316/316L/316H/316LN, TP317/317L/317LN, TP321/321H, TP347/347H, TP316Ti, TP904L, 600/N06600, 625/N06625, 800/N08800, N08904, 800H，N08825/N08811 and so on.
Similar Standards: ASME SA213, EN10216-5, JIS G3463, DIN17458, GB/T13296
Specification: OD 6mm to 1016mm; WT 0.5mm to 30mm; Length Max 25m.
Tests: all tubes should be hydro static tested, non-destructive tested (ET and/or UT).
This specification covers seamless ferritic and austenitic steel boiler, superheater, and heat-exchanger tubes, designated Grades T5, TP304, etc. Grades containing the letter, H, in their designation, have requirements different from those of similar grades not containing the letter, H. These different requirements provide higher creep-rupture strength than normally achievable in similar grades without these different requirements.
The tubing sizes and thicknesses usually furnished to this specification are 1⁄8 in. [3.2 mm] in inside diameter to 5 in. [127 mm] in outside diameter and 0.015 to 0.500 in. [0.4 to 12.7 mm], inclusive, in minimum wall thickness or, if specified in the order, average wall thickness. Tubing having other diameters may be furnished, provided such tubes comply with all other requirements of this specification. 1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. The inch-pound units shall apply unless the “M” designation of this specification is specified in the order.
The heat treatment differs with different materials.
TP304L material is used very frequently.
The grade 304L is an austenitic stainless steel that can be used in mild chemicals with less acidity and less oxidation and reduction capacity. Food and beverages industries often deal with mild acids like carbonic acids, citric acid and tartaric acids. These are found in food items and are mild acids that do not corrode the 304L Pipe. The material has 18% chromium and 8% nickel along with other additions but with less carbon than the ordinary SS 304 Pipe material.
This composition allows certain range of chemical tolerance. Domestic applications, industrial and commercial applications that deal with mild chemicals can all use this material. There are limitations as what concentration of the chemicals can be allowed on 304l stainless steel pipe material. Even the strongest of materials like commercially pure titanium could corrode under heavy concentrations of strong acids like hydrochloric, sulfuric and nitric acids.
So the concentration of the chemical determines which type of steel could be used. The SS 304L Seamless Pipe has mild oxidation resistance, reduction resistance due to the addition of nickel and mild corrosion resistance due to the addition of chromium. So the application requirements determine which kind of chemical at which concentration could be allowed on 1.4306 Pipe material.
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