Pipe Stub End
During flanging process, the work blank margin usually is not deformation zone because it is restricted by blank holder force and the ratio between the width of the margin and bore diameter is pretty large. The deformed wall serves as force transferring area. The bottom with hole is deformation zone, which is driven by two-directional tensile stress (tensile stress along thickness direction is negligible). Deformation zone will become thinner under the effect of tensile stress, which belongs to the same principle of bulging.
For stub end with non-circular inner bore, strain and stress distribution of deformation zone is uneven along the flanging line. With the same flanging height, the part with smaller radius of curvature has larger tangential stress and tangential deformation, while the part with larger radius has smaller tangential stress and tangential deformation.
Pipe Stub End Standard:
GB/T12459-2005 ASME B16.9-2007, ASME B16.25-2007
MSS SP 43-2008 BS1640-1-1962, BS1640-2-1962, BS1640-3-1968, BS1640-4-1968 AFNOR NF A 49-170-1-1999, AFNOR NF A 49-170-2-2009, AFNOR NF A 49-170-3-2009, AFNOR NF A 49-170-4-2009
Available sizes range we can produce:
Outside diameter : 1/2"~24", DN15~DN600
Thickness : SCH10, SCH20, SCH30, STD, SCH40, SCH60, XS, SCH80, SCH100, SCH120, SCH140, SCH160, XXS, SCH5S, SCH20S, SCH40S, SCH80S.
The largest thickness reaches 200mm.
Pipe Tee Material :
Carbon steel: ASTM/ASME A234 WPB - WPC
Alloy steel: ASTM/ASME A234 WP 1-WP 12-WP 11-WP 22-WP 5-WP 91-WP 911
Stainless steel: ASTM/ASME A403 WP 304-304L-304H-304LN-304N
ASTM/ASME A403 WP 316-316L-316H-316LN-316N-316Ti
ASTM/ASME A403 WP 321-321H ASTM/ASME A403 WP 347-347H
Low-temperature steel: ASTM/ASME A402 WPL 3-WPL 6
High-performance steel: ASTM/ASME A860 WPHY 42-46-52-60-65-70