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X Z Z Machinery Co.,Ltd
X Z Z Machinery Co.,Ltd. Forged products, seamless pipe and steel plate, excellent quality and competitive price give a benefit to help with savings.
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X Z Z Machinery Co.,Ltd Quality Info

X Z Z Machinery Co.,Ltd

Quality Control Table

 Our company has passed the ISO9001: 2000, TUV Rheinland of PED quality management system certification,At the same time our company has received Germany GL, US ABS, Norway, DNV, France BV and other classification societies certified. 

 

ItemProcessFacilityInspection itemsStandard

01
 
Steel material
 inpection
 Chemical composition
(EF+LF+VD)
Material standard
 surfaceIngot inspection 
specification
 Ingot type and weightMaterial standard
02
 
Material
store
 Division putwarehous management
1
 
Heat Heat furnaceTemperature/Time

Heating process 

specification
Forging production 

procedure

2
ForgingPress

Reduction ratio,forging 

temperature,deformation, 

Surface and dimensions

Forging process card
Forging procedure
3
Heat treatmentheat treatment
 furnace
heat treatment charts1st heattreatment card
Forging procedure
4
Rough 
inpection
 Dimensions, apperance,
 Mark
Inspection specification
Forging procedure
5
Rough UTUT equipment

Single defect, concentrated 

defectsbottom wave 

attenuation

UT standard or 

customer'stechnical 

requirements

6
Saw cuttingSaw machineDimensionIQC and forging
7
rough turningturning-latheDimension,appearance 

Rough machining 

drawing

8
UTUT equipment

Single defect, concentrated 

defects bottom wave attenuation

UT standard or 

customer'stechnical 

requirements

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

Heating process 

specification

10
Sampling or machiningmachining toolrough 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
UTUT equipment

Single defect, concentrated 

defectsbottom wave 

attenuation

UT standard or 

customer'stechnical 

requirements

14
MTMT equipmentMagnetic particle 
indication
Test standard or 
Technical requirements
15
MarkSteel sealmarking contentProduct standard
Technical requirements
Forging process
16
Final 
inspection
 Appearance, dimension, mark
acceptance inspection

Product inspection 

specification
Product standard
P.O.

17Protection/
package
Blasting
Blasting equipment
appearance
coating thickness
Product standard
Technical requirements

 

 

 

 

ItemQuantityInspection methodInspectorRecord

01
Each batchMaterial cert.&
Re-inspection
IQCQualified supplier list
/Material inspection record/
Warehouse record
Each pieceVTIQC
Each pieceElectronic scalewarehouse
 keeper
02
Each batchVTwarehouse
 keeper
Process inspectoion
 table
1
Each furnaceinfrared thermometerFurnace
 operator
computer data recorder
Heat precedure card
Computer data recorder
2
Each pieceinfrared thermometer, callipers, ruller and VTForemanForging card
3
Each furnaceinfrared thermometeForemancomputer data recorder
Heat precedure record
Computer data recorder
4
Each piecetape measure/callipers/ ruler 
VT
QCForging inspection card
VT
5
Each pieceContact scanning
 method
UT inspectorForging inspection
 card
6
Each piecetape measure/ ruler 
VT
ForemanProcess shift
 list
7
Each pieceTape measure/ruller/callipers
VT or Special measuring tool
Operator or 
QC
Forging inspection card
rough machining drawing
8
Each pieceContact scanning
 method
UT operatorForging inspection 
card
9
the same 
furnace
infrared thermometer
temperature recorder
Foremanheattreatment card
temperature recorder
10
Each piecevernier caliper
impact test projector
Operator or 
QC
Sampling record
11
Each pieceHygrothermograph,vernier caliper
vernier caliper, Extensometer
Test operatortest record
test report
12
Each pieceRuller, vernier caliper,dialgage
micrometer etc.
Operator or 
QC
finish machining
drawing
13
Each pieceContact scanning
 method
UT inspectorUT report
14
Each pieceyoke methodMT inspectorMT report
15
Each pieceVTOperator or 
QC
monotype
16
Each piece

VT, measure tooling, standard, 

technical requirements, certficates

FQCProduct certificate/
forging inspection process
17Each pieceultrasonic thickness gaugeOperator or 
QC
anticorrosive coating
report


 

Company Certifications

Standard:DNV certificate
Number:
Issued By:
Standard:API 6A certificate
Number:
Issued By:
Standard:ABS certificate
Number:
Issued By:
Standard:LR certificate
Number:
Issued By:
Standard:
Number: 320582000201008130029S
Issued By:
Standard:
Number:
Issued By:
Standard:
Number: 320582560283125
Issued By:
Standard:
Number: 0718663
Issued By:AQSIQ
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