BS6323 CEW1 57.15X2 Seaamless steel tubes material

BS6323 CEW1 57.15X2 Seaamless steel tubes material

BS6323 This standard is published in eight separate parts as follows:

--Part 1: General requirements

--Part 2: Specific requirements for hot finished welded steel tubes:

--Part3:Specific requirements for hot finished seamless steel tubes

--Part4:Specific requirements for cold finished seamless steel tubes

--Part 5:Specific requirements for electric resistance welded(Including induction welded)steel tubes

--Part6:Specific requirements for cold finished electric resistance welded(Including induction welded)steel tubes

--Part7:Specific requirements for submerged arc welded steel tubes

--Part8:Specific requirements for longitudinally welded stainless steel tubes.

Delivery condition:

a) Cold finished/hard (cold finished as drawn):BK

b) Cold finished/soft(lightly cold worked):BKW

c) Annealed:GBK

d) Annealed(Including de-scaling):GZF

e) Normalized:NBK

f) Normalized(Including de-scaling):NZF

It is permissible for tubes supplied in the GBK and NBK conditions to be discoloured,but they shall be free from loose scale.

GBK condition are required bright annealed

Chemical composition and mechanical properties

Testing:Flattening test

Drift expanding test

Leak tightness test