Quality Control Policy

     Quality first

     Service-oriented

     Continuous improvement

     Customer satisfaction

                                                          General Quality Plan

	Process	Content	Specifications or Requirements	Monitoring Method/Frequency	Record	Person in charge
1	Receiving inspection	Related quality	QP-07 Control program for procurement WI-03 Specification for Receiving Inspection 35CrMo TS-01-01 Specification for material 35CrMo casting TS-01-02 Specification for material Q345 XW-YF-06 Specification for rubber raw material TS-03-02 Testing technology of cementing compound	Audit the mill test report or re-inspect every procurement   Inspection on API 16A metal parts, also as the final inspection.	Raw material mill test report   Record of receiving inspection	QC
2	Burdening   Mixing	Correct ingredient   Rubber compound property	Ingredient TS-04-01 Operation instruction for burdening TS-04-02 Operation instruction for mixing MACTS-02 Acceptance criteria for producing rubber	The ingredient and mixing technology are patents of our company. It is controlled by specified person.   Sampling 100% of the rubber compound, full inspection of every car   Final judge according to MAC of rubber material	Record of material   Record of rubber physical property testing	QC
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5	Shot blasting of the supportrib	Appearance	TS-07 Specification for shot blasting	In process quality control.	Not required	QC
6	Cementing of the support rib	Operation instruction	TS-03-01 Cement technology	In process quality control.	Treatment record of iron	QC
7	Vulcanization	Temperature, pressure, time	TS-05 Operation instruction of vulcanization   Vulcanization process sheet	Self-inspection and in process quality control by QC.	Self-inspection record of vulcanization   In process quality control of vulcanizing shop	QC   Production department
8	Trimming, appearanceinspection	Appearance and size	TS-06 Specification for product handling MAC Manufacturing MAC	Full inspection of appearance Hardness of metal parts, see mill test report Sampling inspection of the size	Inspection record	QC
9	Water pressure test on annular sealing element diameter	Only on annular sealing element	Seal performance test on annular sealing element                            TS-09                                     Testing instruction for drift diameter gauge	100% Full test	Records of the seal  performance of the annularpackers and diameter testing	QC
10	Mark(When delivery)	Compliance of the mark	TS-08 Operation instruction of product mark Requirement of customer	100%	NA	warehouse