分类： 网络与安全
2015-09-15 15:50:07
"GOST 12821 flange" connection is the two pipes, fittings or
equipment, and forged flange connection is an important connection pipeline
construction. Forged flange connections easy to use, able to withstand greater
pressure. In the industrial pipeline, "GOST
12821 flange" using the connection is very extensive. Within the
family, the pipe diameter is small, and is a low pressure, invisible flange
stamping elbow connection. If in a boiler room or a production site, full of
flanged pipe and equipment. Chromium content of 0.1% to 0.5% (forged flange
generally free of chromium), carbon content of 1.0% or less and forging
manufacturing forged flange high temperature, some forged flange surface
hardness (HRC) although You can reach ≥ 56 above (quenching layer is only about
15 mm), forged flange material because of its poor harden ability hardness of
heart to only 30 degrees, under normal circumstances, often using forged flange
water quenching process.
"GOST 12821 flange" advantage
1,
cost savings. When the pipe material particular, when the price is expensive,
flange welding the same material cost is high.
2, is not easy or not easy to
weld large processing or strength needed. Such as plastic pipe, glass pipe and
the like.
3, ease of construction. When the connector flange bolt holes is
not easy to find the corresponding positive or prevent future replacement of
equipment flange bolt holes have changed and so on.
