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Zhangjiagang Zhongzhong Import&Export Co., Ltd.
X Z Z Machinery CO.,LTD. Forged products, seamless pipe and steel plate, their excellent quality and competitive price give your customer a benefit to help with savings.
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Zhangjiagang Zhongzhong Import&Export Co., Ltd. Quality Info

Zhangjiagang Zhongzhong Import&Export Co., Ltd.
Zhangjiagang Zhongzhong Import&Export Co., Ltd.
Province/State: Jiangsu
Country/Region: China
Tel: 86-512-55395553,86--
Contact Person:
Nicole Xu
Quality Control

Quality Control Table

 

 

Item Process Facility Inspection items Standard

01
Steel material
 inpection
 

Chemical 

composition
(EF+LF+VD)

Material standard
  surface Ingot inspection 
specification
  Ingot type and weight Material standard
02
Material
store
  Division put

warehous

 management

1
Heat  Heat furnace Temperature/Time

Heating process 

specification
Forging production

 procedure

2
Forging Press

Reduction ratio,

forging temperature, 

deformation, Surface 

and dimensions

Forging 

process card
Forging 

procedure

3
Heat treatment heat treatment
 furnace
heat treatment charts

1st heattreatment

 card
Forging

 procedure

4
Rough 
inpection
  Dimensions, apperance,
 Mark

Inspection 

specification
Forging 

procedure

5
Rough UT UT equipment

Single defect, 

concentrated

 defects
bottom wave

 attenuation

UT standard or 

customer's
technical 

requirements

6
Saw cutting Saw machine Dimension IQC and forging
7
rough turning turning-lathe Dimension,appearance 

Rough 

machining 

drawing

8
UT UT equipment Single defect, concentrated defects
bottom wave attenuation

UT standard or 

customer's
technical

 requirements

9
Q+T 
heat treatment
heat treatment
 furnace
heat treatment charts

Heating process 

specification

10
Sampling or machining machining tool

rough machining 

drawing
sampling 

drawing

sample

 machining 

drawing

11
mechanical 
property test
 tensile testing machine/
impact testing machine

ambient temperature,

humidity,Test temp.
Sample dimension, 

test method

Standard
technical 

specification

12
finish 
machining
machining 
tool

Dimension,

appearance 

finish machining

 drawing

13
UT UT equipment

Single defect, 

concentrated 

defects
bottom wave

 attenuation

UT standard or

 customer's
technical 

requirements

14
MT MT equipment Magnetic particle 
indication

Test standard or 
Technical 

requirements

15
Mark Steel seal marking content

Product standard
Technical 

requirements
Forging process

16
Final 
inspection
 

Appearance, 

dimension, mark
acceptance inspection

Product inspection 

specification
Product standard
P.O.

17 Protection/
package
Blasting
Blasting equipment
appearance
coating thickness

Product 

standard
Technical 

requirements

 

 

 

Item Quantity Inspection 
method
Inspector Record

01
Each batch Material cert.&
Re-inspection
IQC Qualified supplier list
/Material inspection record/
Warehouse record
Each piece VT IQC
Each piece Electronic scale warehouse
 keeper
02
Each batch VT warehouse
 keeper
Process inspectoion
 table
1
Each furnace infrared thermometer Furnace
 operator
computer data recorder
Heat precedure card
Computer data recorder
2
Each piece infrared thermometer, callipers, ruller and VT Foreman Forging card
3
Each furnace infrared thermomete Foreman computer data recorder
Heat precedure record
Computer data recorder
4
Each piece tape measure/callipers/ ruler 
VT
QC Forging inspection card
VT
5
Each piece Contact scanning
 method
UT inspector Forging inspection
 card
6
Each piece tape measure/ ruler 
VT
Foreman Process shift
 list
7
Each piece Tape measure/ruller/callipers
VT or Special measuring tool
Operator or 
QC
Forging inspection card
rough machining drawing
8
Each piece Contact scanning
 method
UT operator Forging inspection 
card
9
the same 
furnace
infrared thermometer
temperature recorder
Foreman heattreatment card
temperature recorder
10
Each piece vernier caliper
impact test projector
Operator or 
QC
Sampling record
11
Each piece Hygrothermograph,vernier caliper
vernier caliper, Extensometer
Test operator test record
test report
12
Each piece Ruller, vernier caliper,dialgage
micrometer etc.
Operator or 
QC
finish machining
drawing
13
Each piece Contact scanning
 method
UT inspector UT report
14
Each piece yoke method MT inspector MT report
15
Each piece VT Operator or 
QC
monotype
16
Each piece

VT, measure tooling, standard, 

technical requirements, certficates

FQC Product certificate/
forging inspection process
17 Each piece ultrasonic thickness gauge Operator or 
QC
anticorrosive coating
report

Certifications

Zhangjiagang Zhongzhong Import&Export Co., Ltd. Certifications
Standard:
Number: 320582000201008130029S
Issue Date: 2010-08-13
Expiry Date: 2060-08-12
Scope/Range:
Issued By: administrative bureau for industry and commerce
Zhangjiagang Zhongzhong Import&Export Co., Ltd. Certifications
Standard:
Number: 0718663
Issue Date: 2010-08-13
Expiry Date: 2014-08-12
Scope/Range:
Issued By: AQSIQ
Zhangjiagang Zhongzhong Import&Export Co., Ltd. Certifications
Standard:
Number: 320582560283125
Issue Date: 2010-08-13
Scope/Range:
Issued By:
Zhangjiagang Zhongzhong Import&Export Co., Ltd. Certifications
Standard:
Number:
Scope/Range:
Issued By:
Zhangjiagang Zhongzhong Import&Export Co., Ltd. Certifications
Standard: DNV certificate
Number:
Scope/Range:
Issued By:
Zhangjiagang Zhongzhong Import&Export Co., Ltd. Certifications
Standard: LR certificate
Number:
Scope/Range:
Issued By:
Zhangjiagang Zhongzhong Import&Export Co., Ltd. Certifications
Standard: ABS certificate
Number:
Scope/Range:
Issued By:
Zhangjiagang Zhongzhong Import&Export Co., Ltd. Certifications
Standard: API 6A certificate
Number:
Scope/Range:
Issued By:

Company Profile

Zhangjiagang Zhongzhong Import&Export Co., Ltd.

Tel:86-512-55395553,86--

Fax:86-512-55395552

Contact Person: Nicole Xu

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