Forged fold head:
1.We own Asian unique production line which can make diameter of 12m heads and can supply OEM service .Besides we manufacture A3 head with high quality and competitive prices.2.Standard:ISO9001:2008;GB/T25198-20103.Testing : non-destructive(UT,RT,MT,PT) carbon sulphur analysis instrument non-contact type temperature measuring apparatus WE-60type omnipotent testing machine examine the thickness appearance4.Forming method:cold and hot pressing,cold and hot spinning,punching5.License:Manufacture License of Special Equipment People's Republic of China(A3 Head)6.Application:Our different material and specification heads can be used in many fileds,such as petroleum,chemical industry,boiler,pressure vessels,railway transportation,metal structure,water supply facilities and aerospace engineering,etc.7.Material:mild steel,low alloy steel,carbon steel,stainless steel,clad plate,etc
8.Head's gradient as follows(unit:mm):
DN | Straigh edge | Gradient | Tolerance of toal depth(height) |
DN≤2000 | h=25 | outer:1.5 inner:1.0 | (-0.2~+0.6)%DN |
DN≥2000 | h=40 | outer:2.5 inner:1.5 | (-0.2~+0.6)%DN |
others | outer:6%h&≤5 inner:4%h&≤3 | (-0.2~+0.6)%DN |
9.Tolerance of groove angle and groove dimension ,groove surface roughness as follows:
Items | Tolerance |
groove angle | ±2.5° |
groove dimension | ±1mm |
groove surface roughness | no cracks,delamination,inclusions and other defects |
dished head