The standard name of hot dip galvanized steel pipe is "hot dip galvanized welded steel pipe for low pressure fluid transportation". It is hot dip galvanized steel pipe inside and outside on the basis of welded steel pipe, so that the inner and outer walls of the steel pipe are coated with zinc layer at the same time, which greatly improves the corrosion resistance of the steel pipe and reaches about 20 times of the ordinary steel pipe. Hot dip galvanized steel pipe as a pipeline or metal structure, in fire engineering, natural gas transportation, oil processing industry, water conservancy construction and residential buildings are widely used. This product refers to the American standard ASTM A53, British standard BS1387, GB/T3091 and GB/T13793 for use, should not be exposed to acid, alkali, salt and other non-neutral environment.

Hot dip galvanized square rectangular pipe is pickled to remove the iron oxide on the surface of the steel pipe, and then cleaned by ammonium chloride and zinc chloride mixed aqueous solution, and then sent into the hot dip plating tank.

Black square tube is a name for square pipe and rectangular pipe. It is made of strip steel after process treatment. In general, strip steel is unballed, leveled, crimped and welded into a round tube, which is rolled into a square tube and then cut to the required length.

Spiral steel pipe standard name is "spiral seam double-side submerged arc welded steel pipe", is the use of hot rolled steel strip as pipe billet, at room temperature through spiral molding, spiral seam automatic submerged arc welding method welding, the inside and outside should have a submerged arc welding seam.

The standard name of straight seam welded steel pipe is "welded steel pipe for low pressure fluid conveying". It is widely used for conveying low pressure fluid such as water, gas, fire fighting, air, oil and heating steam, as well as for mechanical structural purposes such as agricultural greenhouse, furniture and scaffolding. Steel tubes are divided into ordinary steel tubes and thickened steel tubes according to wall thickness. 4 -8 inch high frequency welded pipe products have been strictly inspected and tested before leaving the factory. According to ASTMA53, BS1387, GB/T3091, GB/T700, GB/T13798, SY/T5768, GB/T13793 and other relevant standards in welding and outer diameter, ovality, fixed length, pipe end quality, wall thickness tolerance and packaging of welded pipe, Strictly establish and implement the internal control standards stricter than the national standards.

Plastic-lined composite pipe is a steel-plastic composite product with galvanized steel pipe as the base pipe and a layer of plastic anti-corrosion layer bonded on its inner surface. Company according to the Chinese national standard GB/T28897-2012 production of plastic lined composite pipe is divided into cold water pipe and hot water pipe two kinds, cold water with plastic lined composite pipe service temperature is generally not more than 45℃; The use temperature of plastic composite pipe for hot water is generally not more than 80℃. The same pipe shall not be used alternately for hot and cold water.

"Juncheng brand" coated plastic composite pipe is a new type of composite pipe, which is made of steel pipe as matrix, through special technology, melt spraying or adsorption of EP or PE raw materials on the inner wall, outer wall or inner and outer wall, and after high temperature curing.

PE / 2, 3 PE steel pipe anticorrosion is petroleum, chemical industry, water supply and drainage, mines long-distance transport oil, gas, water, pulp, the most commonly used anti-corrosion technology, belong to heavy anti-corrosion series, the design use fixed number of year for 30 years, its technological characteristics: the last time in automatic production line complete steel pipe derusting, heating, epoxy powder coating, rubber, and PE coated layer.

Prefabricated directly buried thermal insulation pipe is suitable for conveying medium temperature within the range of -30℃ ~ 140℃, underground directly buried pipeline, suitable for urban central heating, residential heating pipe network.

Juncheng brand pre-coated hot dip zinc steel pipe is mainly aimed at the hot dip galvanized steel pipe in the harsh environment (such as moisture, acid and alkali, etc.) easy to corrode perforation and specially developed with high efficiency anticorrosive paint outside the special pipe.

Carbon structural steel cold rolled sheet and strip short for, also known as tin substrate, cold plate, is carbon structural steel hot rolled strip, after further cold rolling made. Cold plate surface is clean, thinner thickness, higher precision, annealing, its mechanical and technological performance is better, widely used in metal packaging, automotive, building materials, home appliances and other industries. Usually delivery is in roll form.

Oil casing is mainly used to support the well wall during drilling and after completion, so as to ensure the normal operation of the drilling process and the whole well after completion, and it is the lifeline to maintain the operation of the oil well. Due to different geological conditions, complex downhole stress state, tensile, compression, bending and torsional stresses on the pipe body, so the quality of oil casing itself is higher. The casing itself is also required to be corrosion resistant in corrosive environments. In complex geological conditions, casing is also required to have anti-crush performance. Casing can be divided into: conduit, surface casing, technical casing and reservoir casing.

Seamless steel pipe is a kind of long steel with a hollow section and no joints around it. It is made of steel ingot or solid tube billet by perforation into capillary, and then by hot rolling, cold rolling or cold dialing made. The steel pipe has a hollow section and is widely used for conveying fluids, such as oil, natural gas, gas, water and some solid materials, etc. Seamless steel pipe and round steel and other solid steel, in the bending and torsional strength of the same, lighter weight, is a kind of economic section of steel, widely used in the manufacture of structural parts and mechanical parts, such as oil drill pipe, automobile drive shaft, etc. Seamless steel pipe or a variety of conventional weapons indispensable materials, barrel, barrel and so on mostly with seamless steel pipe to manufacture.