1)Material: verious material are available 2)Standard: ISO9001-2008,GB/T25198-2010 3) welcome OEM service 4)license:A3
91)Material: verious material are available 2)Standard: ISO9001-2008,GB/T25198-2010
3) welcome OEM service 4)license:A3Features
1.DN: 159mm-6000mm
2.Non-destructive: RT UT
3.high quality and competitive price
4.we manufacture grade of A3 heads
5.forming methods: pressing, spinning.
6.specification(about size and wall thickness): according to client's requirements.
7our company can provide drawings in accordance with processing.
8.head's gradient as follows:
DN | straight edge | gradient | tolerance of total depth(height) |
DN≤2000mm | h=25 | outer:1.5inner:1.0 | (-0.2~+0.6)%DN |
DN≥2000mm | 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 | ≤25, no cracks ,delamination, inclusions and other defects |
oval shape head
