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  • Auto Change Purline Machine
  • Auto Change Purline Machine Auto change purline machine mainly consists of hydraulic decoiler, leveling system, punching equipment, cutting equipment, material supporter, roll former, hydraulic system and automatic control system.
  • Curving Punching Forming Machine
  • Curving Punching Forming Machine Punching curve machine is made up of the main forming machine, conveyor, material supporter, electric control system and hydraulic system. Our punching curve machine is kind of auxiliary equipment, which is designed for material curving and punching.
  • Steel Bending Machine
  • Steel Bending Machine This bender equipment is widely used in a variety of industries, such as petroleum, chemical, hydroelectric power, shipbuilding, steel construction, and machinery manufacturing, etc.
  • Box-shaped Column Welding Line
  • Box-shaped Column Welding Line Our steel column welding machine is extensively used in large bridges and high steel structure buildings. Our box column welding machine has earned two patents of utility model, and we can design it according to customers’ specific requirements.
  • Racking Roll Forming Machine
  • Racking Roll Forming MachineRacking roll forming machine adopts servo controlled material feeding technology for complex punching to guarantee precision. This storage rack roll forming machinery
  • Cable Tray Roll Forming Machine
  • Cable Tray Roll Forming MachineCable tray roll forming equipment (also called cable ladder roll forming machine) is capable of making different sizes of cable trays through replacing punching moulds.
  • Slitting Line
  • Slitting LineSlitting line is also named slitting machine or slitter. It is mainly used to slit tinplate coil, galvanized coil sheet, siliconized steel sheet, cold rolled coil sheet, stainless coil sheet, aluminum coil sheet as the requested specifications and recoil them. This line is the pre-process of steel sheet for industry like transformer, household electrical appliance, automobile, building material, packing, etc. Basically, the slitting line can
  • Cut To Length Line
  • Cut To Length LineCut to length machine is also named as transversal shearing line, cut-to-length machine or cut-to-length production line. It is mainly used to cut tinplate coil, galvanized coil sheet, siliconized steel sheet, cold rolled coil sheet, stainless coil sheet, aluminum coil sheet as per the requested product length and stack them for packing. Cut to length line is the pre-process of coil steel sheets used in the following industries
  • HPG H-beam Shot Blasting Machine
  • HPG H-beam Shot Blasting MachineHPG H-beam shot blasting equipment, also known as H-beam shot blast cleaning machine, is a kind of shot blasting and cleaning equipment. It can be divided into light H-beam model and heavy H-beam model. Light H-beam shot blasting equipment is equipped with high efficiency rotor blast device which can blast dense and high speed steel balls to shoot the workpieces at all directions. HPG H-beam shot blasting machine
  • JPG Steel Plate Shot Blasting Machine
  • JPG Steel Plate Shot Blasting MachineJPG series steel plate shot blasting equipment is used for steel plate pre-treatment and steel structural parts processing. It is characterized by high working efficiency, good treating quality, good adaptability and low cost. This shot blasting equipment is designed with a top-mounted cartridge dust collector and pellet sand separator device, which enables the machine perform more stably and reliably
  • Roofing Panel Sheet
  • Roofing Panel SheetThe roofing panel uses pre-painted color steel sheet or galvanized steel sheet with a corrugated profile. It is characterized by water resistance, light weight, easy installation, popular design, nice color, economical price, etc. We also supply stone-coated tile roofing sheet. Rontech roofing panel is made from first quality materials that the sheets can be formed after coating and then accurately cut into specific dimensions.
  • Wall Panel Sheet
  • Wall Panel SheetRontech wall panel sheet uses pre-painted color steel sheet or galvanized steel sheet with a corrugated profile. It is featured with water resistance, light weight, easy installation, popular design, nice color, economical price, etc. This corrugated panel is used to protect the exterior surface of a building against exposure, prevent heat loss and visually unify the face of the building. Our wall panel

Building Materials

Jinggong Science & Technology is a China construction materials machinery manufacturer. Our primary products include PU sandwich panel machine, high speed roll forming machine, steel deck forming machine, auto change purline machine, purlin forming machine, downspout forming machine, guardrail forming machine, as well as some auxiliary equipment such as slitter, uncoiler and stacker etc.

The following is a sample of some of our products:
Our PU sandwich panel machine mainly consists of uncoiler, film covering system, roll forming machine, preheating oven, electric control system, hydraulic system, and pneumatic system etc. It is highly efficient and easy to operate. Therefore, it is widely used in the construction of steel structure enclosures, cold storages and mobile buildings.

Our steel deck forming machine is extensively used in high steel structure buildings, which reduces floor load and eliminates the need for building formwork.

Rontech Imp & Exp Co., Ltd is a subsidiary company of Zhejiang Jinggong Science & Technology Co., Ltd. Our company is a professional manufacturer of cold roll forming machines in China. Based on the support from our holding company, we are specialized in providing high frequency welded pipe mill, sandwich panel line, steel coil slitting line, cut to length line, metal working, shot blasting machine, metal coil sheet, etc. Rontech supplies reliable and durable roll forming equipment or roll formers to our customers. We also have a professional service team, who can serve customers all over the world.

Jinggong Science & Technology has been a steel structure machine manufacturer since 1968. Throughout the 41 years of development, the company has expanded its production to include a wide range of products such as H beam welding machine, box column welding machine, gantry submerged arc welding machine, digital folder, slitting machine, and more. Here we give you some information about several types of our products.

Our H beam welding machine requires few operators and is suitable for large-scale welding jobs, bringing maximum value to users.

Slitting line and cut to length line are mainly used for pre-process of coil steel sheets. They are widely applied in industries like transformer, household electrical appliance, automobile, building material, packing, etc. Slitting machine is suitable for slitting kinds of wide steel strips into certain width, such as carbon steel coil, low alloy steel coil and stainless steel coil, etc. Then it recoils them to meet the requests of various procedures for welded pipes and cold rolled section steel production. Pipes produced by the slitting line are used in metallurgy, construction, transportation, machinery and vehicle industries. Cut to length line or cut to length machine is an automatic transversal cutting production line for cutting metal sheets.

Shot blasting machine adopts rotor blasting device to shoot the steel ball and blasts on the surface of steel workpieces so as to clear the dust, rust, burr or other objects on the workpiece surface. After shot blasting, the workpiece surface becomes clearer but more adhesive for painting. The interior physical character becomes more stable. Shot blasting equipment helps to prolong the life of workpieces. Rontech possesses engineers who own over 15 years of experience for shot blasting machines. This blasting machine is the first choice in domestic market.

We have a professional technical team of first-class rich experience and well-trained technicians. The metal coil sheet and metal corrugated panel products developed and designed by us meet the international standard. Our steel coil products have been used and widely praised by clients from more than 30 countries and areas, such as Russian, Brazil, India, South Africa, Germany, USA, Mexico, Saudi Arabia, and so on.

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