Pipeline engineering is divided into pipe prefabrication, on-site prefabrication and on-site installation. Golden Harvest has special equipment license for pressure installation and factory prefabrication of pipe sections.

In the actual project, it is found that taking factory prefabrication not only has high efficiency and saves the cost of on-site installation, but also has great improvement on the installation, quality and progress of the whole project.

Pipe design, prefabrication management, pipe cutting, pipe beveling, welding, logistics and anticorrosion paint, pipe flaw detection and other work to facilitate the coordination and control of quality, progress, management. Our company adopts pipe prefabrication production line and CNC equipment to improve the efficiency and quality of pipe prefabrication and maximize the superiority of pipe prefabrication. Various pressure pipe sections can be prefabricated according to the needs of user design drawings.

Commonly used products are represented:

01.Directly buried steam insulation pipe

The prefabricated directly buried steam insulation pipe produced by our company is widely used in the transmission of liquids and gases, chemical pipeline insulation project, petroleum, chemical industry, centralized heating heat network, municipal engineering and so on. This product is a kind of direct buried prefabricated thermal insulation pipe with good thermal insulation performance, safety and reliability, low project cost, effectively solving the problems of thermal insulation, sliding lubrication and waterproofing of exposed pipe end of the heating insulation pipe below 400℃ in the centralized heating in towns and cities. Pipes laid in the underground soil environment, the road passing vehicles and pedestrians and the surrounding vegetation does not affect.

1)Working Tubes

Type of steel pipe (optional): seamless fluid pipe, submerged arc welding spiral steel pipe

2)insulation layer

Material type (optional): asbestos-free microporous calcium silicate, high-temperature resistant centrifugal glass wool, aluminum silicate needle-punched blanket, nano aerogel, rock wool, GQ composite silicate pipe shells

3)outer casing

Steel pipe type (optional): submerged arc welding spiral steel pipe, straight seam welded pipe

4)External anti-corrosion layer

Anti-corrosion type (optional): epoxy coal asphalt three cloth five oil, polyurea spraying, 3PE, fiberglass resin, dissolved epoxy powder

Product Specification
 

02Insulation fittings

Insulation pipe fittings structure and insulation pipe structure is similar or the same, generally used in conjunction with the insulation pipe.

Insulation fittings are also divided into prefabricated steam insulation fittings and polyurethane insulation fittings, including insulation elbow, insulation tee, insulation compensator, insulation reducer and other insulation fittings structure and insulation pipe structure.

Thermal insulation tee, thermal insulation compensator, thermal insulation reducer and other thermal insulation fittings structure and the structure of the pipe insulation

Similar or the same, generally used in conjunction with the pipe insulation. Insulation pipe fittings finished product implementation standards and insulation pipe, that is, the implementation of steam insulation pipe fittings CJ/T 246-2018, polyurethane insulation pipe fittings GB/T 29047-2012, can also be customized according to the requirements of the use of units produced!

03Rubber-lined anti-corrosion steel pipe and fittings

Steel-plastic lining pipe standard, steel rubber lining pipe standard, plastic lining pipe fittings standard, PTFE lining pipe standard, PTFE lining pipe fittings standard Steel-plastic composite pipe executes HG20538-92 and HG/T2347-93 standard Rubber lining composite pipe executes HG2150-93 standard Raw material quality standard: Steel pipe: the material should meet the requirements of GB8163 or GB3092. Plastic: the material shall meet the requirements of GB4219-84, SG80-75, SG189-80 and GBn85-80 for corresponding plastic. Rubber plate: the material should meet the requirements of HG4-504-67 and GB5575. Processing and manufacturing precision and performance indicators: follow the steel-plastic, rubber-lined composite pipe industry standards, according to product drawings, process procedures and product quality inspection standards. Appearance: steel-plastic, rubber-lined composite pipe, pipe fittings, the appearance of flat, smooth and no obvious hair, cracks, wrinkles and other defects Packaging, storage and transportation: pipes and fittings of the end of the set of special plastic protective or fiberboard protective cover, but also according to user requirements to take other forms of packaging. Storage should be stacked flat, ventilated, away from heat and light exposure, the transportation process should be gently up and down, to prevent falling, impact. Winter storage should be placed indoors, take protective measures. Signs: steel-plastic, rubber-lined composite pipe factory by the inspection, each product is marked with product type, specifications, qualified signs, and the factory manufacturing signs.

After years of practical use of PTFE lined anti-corrosion pipe, the factors that directly affect its service life and performance stability are temperature, pressure, medium, etc., high-quality materials and advanced manufacturing process is the quality assurance of PTFE lined products. Steel lined with PTFE straight pipe is commonly known as loose lining pipe.

It is characterized as follows:

One: high temperature in the strong corrosive media conditions, can meet the use of temperature range -60 degrees ~ 200 degrees, in this temperature range to meet all the chemical media

Two: vacuum can be used in vacuum conditions, in chemical production, often due to cooling, vertical discharge, pumps and valves do not synchronize the operation of the situation caused by the local vacuum status

Three: high pressure resistance In the temperature range, can withstand up to 3MPA pressure.

Four: anti-permeability Selection of high-quality polytetrafluoroethylene resin, through advanced lining technology into a high-density, sufficient thickness of the PTFE lining layer, so that the product has superior impermeability

Fifth: the whole molding sintering process lining, solved the steel and fluorine hot and cold expansion and contraction of the problem, so as to achieve synchronous expansion and contraction.

Sixth: standardized size preparation, especially the chemical pipeline pipe, pipe fittings are used in the strong interchangeability, for the installation, spare parts provide a great convenience.