Drill String Cross-over Sub uses AISI4145H chromium-molybdenum steel, execute API specification.We can produce the same-dia type, reducers type and L-type three types, the screw can be cold thread rolling, copper or phosphate treatment.
JIS G3106 SM400B steel plate is the carbon and low alloy steel plate. KUNFENG can supply JIS G3106 SM400B Carbon and low alloy steel plate with good price and high quality. we get many good feedback owing to many reasons.
We are professional on supplying GB/T 3077 30CrMo alloy steel plate. GB/T 3077 30CrMo alloy steel plate is also can be named the star product of KUNFENG. Please send us your any question for GB/T 3077 30CrMo alloy steel plate. We will do our best to reply
KUNFENGs is a big stockist of steel raw material and producer of ASTM A517 GRADE B steel plates.These steel work, steel structure and steel machining parts can be used on pressure vessel and boiler, please