Quality control for elbow

Control Plan for Quanlity Test

 

Product

Elbow

No.

HT-QC1-O9O1O1-06

Name

Elbow

DimensionStandard

ASTM B 16.9-07

Material Standard

A 234 WPB

Original Material

Standard

A 106

Material requst

Chemical Composition  (%)

C

Mn

Si

Mo

S

P

Cr

Ni

Cu

V

≤0.3

0.29-1.06

≥0.10

≤0.15

≤0.058

≤0.50

≤0.40

≤0.40

≤0.40

≤0.08

Mechanical Property

T S(Mpa)

E/L(S%)

Y/S(Mpa)

415-655

≥30

≥240

Material DOB in 3.1 form

manufacture & process

Process name

 

Process details& tools

Inspection method

 

Cutting

 

Saw(saw machine)

10% casua linspection

Forming

 

Hot forming(850±25℃)

10% casual inspection

Rough truing

Hot process

10% casual inspection

End Bevelling

Beveling machine(37.5º ±2.5º)

10% casual inspection

Surface rough process

Rub surface defect

10% casual inspection

Quality inspectio

Surface treatment

Sand blasting & painting

Surface quality accord with the 7th specification of ASTM B 16.9

10% casual inspection

Size

According with the  6th specification of ASTM B16.9

100% casual inspection

Marking& packaging

Marking

Manufacturer name material heat No. size specification and so on

10% casual inspection

Painting

Acorrding with client’s requirment

10% casual inspection

Packaging

Fumigation-free wooden cases,pallet

10% casual inspection

 

Skecth  pictures

   

Drawed byLiu Xiao                    Approved byXu Yong

 

HAITIAN PIPE FITTINGS CO.,LTD , CHINA
Tel:86-317-5678500/5678501  Fax:86-317-5678502
E-mail:sales@pipefitting.cc