Oil casing is used to support the oil, gas wells of steel pipe, in order to ensure the drilling process and the completion of the entire well after the normal operation. Each well has several layers of casing depending on the drilling depth and geology. Casing down to use cement cementing, it and the tubing, drill pipe is different, can not be reused, a one-time consumption of materials. Therefore, the casing of the total consumption of more than 70% of the wells. Casing according to the use can be divided into: catheter, surface casing, casing technology and oil casing.

Petroleum cracking pipe is a kind of hollow long circular seamless steel pipe. Petroleum cracking pipe uses: used to transport gasoline, kerosene, diesel and other oil products, corrosion resistance, anti-wear. Petroleum cracking pipe (gb9948-83) is suitable for geological drilling and industrial drilling of the first class steel pipe.

ASTM A53 pipe is intended for mechanical and pressure applications and is also acceptable for ordinary uses in steam, water, gas and air lines.

ASTM A106 pipe is always produced by the seamless method and can be bent, coiled and flanged.

Brass plate is a widely used lead brass, has good mechanical properties, and good machinability, can withstand hot and cold pressure processing, used in cutting and stamping processing of various structural parts, such as gaskets, bushings and so on. Tin brass plate has high corrosion resistance, good mechanical properties, good pressure processing in cold and hot state, can be used for corrosion resistant parts on ships and steam, oil and other media contact parts and conduits.

Purple copper plate has good mechanical properties, good plasticity in hot state, good plasticity in cold state, good machinability, easy fiber welding and welding, corrosion resistance, but easy to produce corrosion rupture, in addition, the price is cheap, is widely used as a common copper variety.

Brass pipe, a type of non-ferrous metal pipe, is pressed and drawn seamless pipe. Copper pipes have strong, corrosion-resistant characteristics, and have become the first choice for modern contractors to install water pipes, heating and cooling pipes in all residential commercial housing. Brass pipe is the best water supply pipe.

Copper pipe is also known as red copper pipe. A non - ferrous metal pipe, is pressed and drawn seamless pipe. Copper pipe has the characteristics of good electrical conductivity, thermal conductivity, electrical accessories and heat dissipation accessories of the main material, and become the modern contractor in all residential commercial housing water pipe, heating, cooling pipe installation of the first choice. Copper pipe corrosion resistance is strong, not easy to oxidation, and some liquid substances are not easy to react with chemical, easy to bend shape.