1.Alloy steel,carbon steel,stainless steel,etc 2.Good quality and competitive price 3.Timely delivery 4.Factory based 1. Material: Alloy Steel & High Manganese Steel2. Machine Type: Drilling tool3. Standard: API & ISO4. Hole size: according customer requirement5. Test: UT & MT tested6. Melting process: EAF+LF+VD7. Delivery time: according to the order8.Certificates: ISO9000, ISO14001 ,CCS,GL,BV, ...