Difference between black steel pipe and galvanized steel pipe. Black steel pipe is the uncoated steel and is also called as black steel. The dark color comes from the iron-oxide formed on its surface during manufacturing. When steel pipe is forged, a black oxide scale forms on its surface to give it the finish which is seen on this type of pipe.
China ERW Steel Pipe catalog of ASTM A36 Equivalent Q235 ERW Round Carbon Steel Pipe, JIS G3101 Ss400 Steel Tube Price, ERW Welded Carbon Steel Tube with En 10219 ASTM A500 provided by China manufacturer - TIANJIN SHENGTENG INTERNATIONAL TRADING CO., LTD., page2.
Manufacturer of Metal Tubes - 202 Stainless Steel Pipes, Seamless Honed Tubes, Stainless Steel Round Tube and Chrome Steel Tube offered by Kissui Metaliks & Steels Private Limited, New Delhi, Delhi.
Selection of Material of Construction for steel pipes depends on their Design Temperature, and Fluid Properties. Pipes made from carbon steel lose strength at high temperatures. Electric-resistance-welded pipe is not considered satisfactory for service above 750 F, whereas furnace-buttwelded pipes are not good above 650 F. For higher temperatures, pipe made from stainless steels or 
Stainless Steel Pipe 201 - Alibaba. china wholesale factory supplier weight erw ss mirror square pipe and steelmanufacturers weld 202 Seamless Stainless Steel Pipe/Tube 201 Grade .China high quality astm stainless steel welded pipe aisi 201 202 301 304 316430 304l. Stainless Steel Pipes & Tubes - Stainless Steel 316 Pipes
Established in the year 1985, at New Delhi, Delhi, India, we Jadia Pipes (India) Limited are a well known manufacturer & exporter of a wide range of Stainless Steel Tube, UPVC Pipes, ERW Black & Galvanized Pipes and Square Hollow Section.These are widely used in Mechanical & General Engineering purpose, Power Plants and Industrial & Street Electrification.
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