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Henan Shenlong Petroleum Drilling Tools Co.,Ltd
nancyspring |
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www.sptechs.com |
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 drill collarAPI
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تاريخ الإضافة
28/04/2008 23:05:38
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تفاصيل
Drill collars we produce arew made from 4145H forging or rolling mocified steel.We manage our production and inspectioin process strictly according to the API SPEC7 requirements. All connections are phosphate -coated to improve resistance to corrsion. We can also deo copper plating according to clients requirements. We offer slip groove
elevator groove and provide thread protector for both pin and box.
Different sizes we produce are form 3 1/2" to 11"
our strength is large size like above 9" and small size like below 4 3/4
Shonglong promises our products with superior quality
long life
short delivery time and competitive price.
Welcome your enquiry any time!
السعر
FOB
تفاصيل
البيع و الشراء
30%TT AND 70%L/C
FOB
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drill collarAPI
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