Quality Testing of  welded titanium tube
Inspection  Item Inspection   Type Typical Testing Standard Inspector Number of Test Remark
Chemical Compisition /   GB223  CDM Samples from each heat no Ensure raw material meet standard requiremet
Tensile Strength Destructive  GB/T 228 , ASTM A370 CDM Samples from each lot no find out the required strength for tube's max tension
Rockwell hardness Testing Destructive  GB/T 230.1 , ASTM A370 CDM Samples from each lot no to check tube's resistance of anti-deformation and concave
Eddy Current  Non-destructive GB/T 7735 , ASTM E426 CDM 100% to check tube's  un-successional of entire perimeter
 Ultrasonic Testing Non-destructive ASTM E213 CDM 100% to check tube's un-integrality
 Hydrostatic Test Non-destructive ASTM A1016 CDM 100% detect leakage or permanent deformation
 Pneumatic Test  Non-destructive ASTM A1016 CDM 100% detect leakage
Flattening Test  Destructive  GB/T 246 ,ASTM A370 CDM Samples from each lot no to check ductibility
Flaring Test  Destructive  GB/T 245 CDM Samples from each lot no to check ductibility
Reverse-flat Destructive  ASTM A370 CDM Samples from each lot no to check ductibility
Reverse-bend Destructive  GB/T 232, ASTM A370 CDM Samples from each lot no to check ductibility
Intergranular Corrosion Destructive  GB/T 4334.5,ASTM A262E CDM Samples from each lot no detect intergranular corrosion and stress corrosion cracking
 Metallographic Test  Destructive  / CDM Samples from each lot no to check effect of heating treament
Visual  Inspection  / / CDM 100% ensure surface quality
Dimension inspection / / CDM 100% ensure dimension meet tolerance requiremt 

Reference Lists

 

Titanium tubes Gr2.

Haibin turbine Co., Ltd

Shajiao Power Station of Guangdong Yudean Group Co., Ltd.

Qinshan Nuclear Power Company limited

Nichel alloy C276

Stainless steel tubes

American Crown Edible Oils Eng. Co., Ltd.

 

 

CDM Technical documents