Welcome to Shandong Changfa Steel
Drill Collar
Classification :
Oil country tubular goods
PRODUCT DETAILS
API SPEC 7-1 drill collar is made with rolling or forging AISI4145H chromium molybdenum alloy steel. Therefore, it needs to control chemical composition and the content of trace elements effectively.
Specification
|
Standard |
Number |
OD |
ID |
Length |
Weight |
Typical Bending |
|
SY5144-2007/API7-1 |
NC 23-31 |
3-1/8 |
1-1/4 |
30 |
22 |
2.57:1 |
|
NC 26-35 (2-3/8 IF) |
3-1/2 |
1-1/2 |
30 |
27 |
2.42:1 |
|
|
NC 31-41 (2-7/8 IF) |
4-1/8 |
2 |
30 or 31 |
34 |
2.43:1 |
|
|
NC 35-47 |
4-3 /4 |
2 |
30 or 31 |
47 |
2.58:1 |
|
|
NC 38-50 (3-1/2 IF) |
5 |
2-1/4 |
30 or 31 |
54 |
2.38:1 |
|
|
NC 44-60 |
6 |
2-1/4 |
30 or 31 |
83 |
|
Packing and shipping
The company is mainly engaged in the production and processing of steel pipes, with a complete range of products, including stainless steel pipes, welded pipes, seamless steel pipes, etc. It also produces steel plates, steel coils, steel strips, and profiles.
Technology
APPLICATION
The company is mainly engaged in the production and processing of steel pipes, with a complete range of products, including stainless steel pipes, welded pipes, seamless steel pipes, etc. It also produces steel plates, steel coils, steel strips, and profiles. It is one of the large steel manufacturers in China, with large warehouses in multiple cities across the country, abundant supply of goods, superior quality, reliable quality, and honest operation.
FACTORY
The company is mainly engaged in the production and processing of steel pipes, with a complete range of products, including stainless steel pipes, welded pipes, seamless steel pipes, etc. It also produces steel plates, steel coils, steel strips, and profiles. It is one of the large steel manufacturers in China, with large warehouses in multiple cities across the country, abundant supply of goods, superior quality, reliable quality, and honest operation.
FAQ
Q1:Can you send samples?
A:Of course, we can provide customers with free samples and express shipping service to all over of the world.
Q2:What product information do I need to provide?
A:Please kindly provide the grade, width, thickness, surface treatment requirement should you have and quantities you need to purchase.
Q3:It's my first time to import steel products, can you help me with it?
A:Sure,we have agent to arrange the shipment, we will do it together with you.
Q4:What about product prices information?
A:Prices various according to periodic price changes of raw materials.
Q5:What ports of shipment are there?
A:Under normal circumstances, we ship from Shanghai, Tianjin, Qingdao, Ningbo ports, you can specify other ports according to your needs.
Q6:What is your terms of payment ?
A:Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shipment or based on BL copy or LC at sight.
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CONTACT US
Address: Liaocheng Economic and Technological Development Zone, Shandong Province
