API 5D oil pipe drill pipe for well drilling

PROCESS FLOW SHEET

1.materials→detection→heat pipe ends→upsetting pipe ends→heat treatment→detection→alignment→friction welding→coaxial tesst→welding zone annealing→chipping edges→welding zone tempering→griding inside and outside→pressure inspection of three points→hardness test,magnetic particle tesing,ultrasonic flaw detection of the welding zone→pipe body detection,weighing,drift diameter and appearance detection→painting;marking;packing and being finished products.

product features:

1.superior--quality raw materials and advanced heat treatment process reflect the pipe's high strength and toughness

et the requirements of API 5D and ISO 9001

3.advanced inspection instruments can ensure the quality of products

4.due to our professional technicians and product flexibility ,we can meet customers'special requirements 

standard packing in bundle 
according to requirements of the customer

TIANJIN DALIPU OIL COUNTRY TUBULAR GOODS CO.,LTD is a modern professional industry and trade combined enterprise, specializing in producing and trading seamless steel pipes.

To stricty control the quanlity of product,we purchase raw materials to the entire production qrocess,

from inspection testing to product shipment and after-sales service,which all have been put in place appropriate control procedures,so that the whole process of production is in the monitoring,which gives you more confidence.

FAQ

 Q: How can I get the samples of product?
A: If you need some samples to test ,please pay for the transportation freight of samples and our samples are free for you(one piece).
Q:What product do you have in Stainless Steel ?
A: Our products including Stainless Steel Coils / Strips, Stainless Steel Sheets / Plates, Stainless Steel tube/pipe,Stainless Steel angle/round/channel bar.
Q: What is necessary informations?
A: In order to get accurate quotation, the standard, material, outer diameter, wall thickness, quantity, destination port are necessary informations.

1. Satisfy your required material tests

2.  Effectiveness: Enquiries and questions shall be solved with 24 hours

3.Fast manufacturing time, delivery
4.Working time: 8:00am - 6:00pm, Monday to Saturday.