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.
Q235B welded steel pipes is an industrial steel pipe which under GB/T 3091-2008 standard, Q235B welded steel pipes’s surface can be painted black paint, varnish, antiseptic oil, galvanized or according to customer requirements, mainly used in low-pressure liquid, water, gas, oil, pipeline, construction, fence, Or wooden pallet packing, piping paint, end plastic cover or according to customer requirements.
KUNFENGs is a big holder of A517 GradeH steel plate and other kinds of steel cash resources, with the rapidly development, we build a new fabrication plant at Shanghai,if you ASTM A517 GRADE H steel work/steel structure/steel machining parts, p
NM450 is an wear-resistant steel plate with a hardness of 450 HBW.NM450 wear-resistant steel plate offers very good weldability.N is a "wearable" in the "resistance" of the first phonetic alphabet. M is "wearable" in the "grinding" the first phone
KUNFENG hope to establish long-term cooperation relationship with client of DIN17100 St37-2 steel plate on the basis of mutual benefit,reciprocity and common development. As DIN17100 St37-2 steel plate suppliers, we are very strict with the quality of DI