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HS Code : 7306.29.00
Standard : API-5CT
Usage : Adjust the overall length
Packing : Steel Frame,Steel Belt
Richsen Product
Usage : Major structural component oil well
Packing : Steel Belt
Usage : Oil extraction
HS Code : 7304.23.90
Standard : API SPEC 7-1
Usage : provide a path for pumping drilling
Richsen product
Usage : connecting the drilling rig
Packing : Steel Belt,Steel Frame