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連絡先担当者 Mr. Joshua
Hailang Road 87,Xi an District, Mudanjing, Heilongjiang
Tool joints of our company are made of modified alloy steel, then fully heat treated. So the mechanical properties in accordance with API standard, such as hardness, strength and impact strength are accorded with standard. All connections are accorded with API Spec. and phosphatized or copper plated in order to improve capacity of resistance to corrosion and anti-galling.