The difference between a carbon steel elbow and a stainless steel elbow? Many friends will ask what the difference is, where are carbon steel elbows used? Are they different there? What means should you use stainless steel pipe elbows? Next, I will briefly introduce you.
Carbon steel elbows, that is, ordinary iron elbows, are easy to rust and require external paint anti-corrosion treatment after welding. Common processing materials for carbon steel elbows are: 20, a3, q235, q235a, q235b, 20g, 16min, ASTM a234wpb, ASTM a105, etc.
Stainless steel elbows usually add alloy components such as chromium cr, nickel - nickel and molybdenum on the basis of carbon steel, with stronger strength and toughness indicators than carbon steel elbows, corrosion resistance, resistance to corrosion, acid and alkali and rust. Common manufacturing materials for stainless steel elbows are: 304, 304l, 316, 316l, s30408, s30403, s31608, s31603, sus304, ASTM a403, tp321, tp317l, 0cr18ni9, 00 cr19ni10, 00cr17ni14mo2, 1cr18ni9ti, 06cr17ni12mo2, 022cr17ni12mo2, etc.
Carbon steel elbows are divided into straight seam carbon steel elbows and seamless carbon steel elbows. Carbon steel elbows are relatively cheap due to the low manufacturing cost of base materials, and carbon steel elbows are often chosen when the usage medium requirements are not high. Stainless steel elbows have better anti-trust, anti-corrosion and acid and alkali resistant properties, and the price is higher than carbon steel elbows. Specifically, materials are selected according to the actual use of the project. Material quality should choose the appropriate steel according to the design requirements or pipe medium, rather than solely based on the price of steel.
Manufacturing standards for elbows:
GB/t12459 - 2017 Steel Butt Welded Seamless Pipe Fittings
GB/t13401 - 2017 steel butt welding pipe parts
SH/t3408 - 2012 steel butt welded seamless pipe fittings
SH/t3409 - 1996 steel butt welding pipe parts
SH/t3410 - 2012 forged steel socket welding fittings
ASME/ANSI b16.9 Factory Made Seamless Steel Pipe Parts
