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In recent years, the price of friction welding drill pipes is still relatively standardized, especially in Hebei and Shandong provinces. Many manufacturers have set up the enterprise official website,···
Friction welding drill pipe is made of high-quality alloy steel pipe, so it can effectively improve the anti-fatigue strength after vacuum treatment, but also has the anti-shear strength, and the qual···
It is because the friction welding drill pipe is relatively simple to operate, and one of them is a grooved drill pipe, which is basically in the form of double helix, which is a complicated structure···
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