As a new type of building materials, plastic pipe products have been widely used in the world in recent years, and they have received much attention from many subjects. China has developed greatly since the late 1980s. As a raw material, the production technology of polyvinyl chloride, polyethylene poly, propylene, etc. has also undergone great changes and the hall, and the pipe products industry has become one of the important industries in China.
After the establishment of CSBTS/TC48/SC3 in 1984, it is currently the fourth committee. The committee consists of raw materials, production enterprises, testing, construction, water conservancy research institutes, design institutes, universities and other units. There are currently 47 full-time members. At present, some companies with considerable scale actively apply for sub-technology. Committee. The SC3 Subcommittee Secretariat is located at the Institute of Industrial Plastics Processing Applications.
At present, the SC3 subcommittee has completed the national standards and industry standards. 90. The national standard development plan projects reported and approved in 2000. More than 20 standard projects are in operation.
SC3's work during the decade from 1984 to 1995 focused on the requirements of hard PVC pipe products for various purposes to meet the needs, most of which have been or are being revised based on implementation experience. .
At present, the work of the technical committee for standardization of plastic pipes, fittings and valves is very active, the team is sturdy and the level is constantly improving. The SC3 Subcommittee will do its utmost to make a greater contribution to the healthy development of plastic pipe products in China.
TC48/SC3 Catalogue of national standards and industry standards completed after 1998:
Standard number standard name note
GB/T3682-200 Determination of mass flow rate and melt volume flow rate of thermoplastic melts
GB/T4217-2001 Nominal outer diameter and nominal pressure of thermoplastic pipes (sort series)
GB/T6111-200X Hydraulic test method for thermoplastic pipes for fluid transfer has been completed
GB/T6671-2001 Determination of longitudinal and longitudinal retraction rate of thermoplastic pipes
GB/T8082-2001 Determination of softening and humidity of thermoplastic pipes and fittings
GB/T8083-2001 Injection molding of rigid polyvinyl chloride (PVC-U), chlorinated polychloroethylene (PVC-C), acrylonitrile-butadiene-styrene terpolymer (ABS) and acrylonitrile-benzene Ethylene-acrylate terpolymer (ASA) and tube hot oven test method
GB/T9647-200X thermoplastic plastic pipe ring stiffness has been determined
GB/T10002.2-200X water supply with rigid PVC fittings has been completed
GB/T10798-2001 Thermoplastic plastic pipe universal wall thickness gauge
GB/T13663-2001 High-density polyethylene (PE) pipe for water supply
GB/T14152-2001 Test method for external impact resistance of thermoplastic pipes -
GB/T15558.1-1995 Buried polyethylene pipe for gas is being revised
GB/T15558.2-1995 Buried polyethylene pipe fittings for gas are being revised
GB/T18252-2000 Determination of long-term hydrostatic strength of thermoplastic pipes by extrapolation method for plastic piping systems
GB/T18474-2001 Test method for cross-linking degree of cross-linked polyethylene (PE-X) pipes and fittings
GB/T18475-2001 Material classification and naming overall (usage) coefficient for thermoplastic pipes and fittings
GB/T18476-2001 - Determination of resistance to crack propagation of polyolefin tubes for fluid transport - Test method
GB/T18477-2001 Hard polyvinyl chloride (PVC-U) double wall corrugated pipe for buried drainage
QB/TXXXX-200X Adhesive for Pipe Fittings for Hard Polyvinyl Chloride Pipe (Industry Standard) Pending Release
GB/T XXXX.1-200X Hot and cold water polypropylene pipe system Part 1: General; To be released
GB/T XXXX.2-200X Hot and cold polypropylene pipe system Part 2: Pipe to be released
GB/T XXXX.3-200X Hot and cold polypropylene pipe system - Part 3: Pipe fittings to be released
GB/T XXXX.1-200X Industrial chlorinated polyvinyl chloride (PVC-C) piping system Part 1 to be released
GB/T XXXX.2-200X Industrial chlorinated polyvinyl chloride (PVC-C) piping systems - Part 2: Pipes to be released
GB/T XXXX.3-200X Industrial chlorinated polyvinyl chloride (PVC-C) piping systems - Part 3: Pipe fittings to be released
GB/T XXXX.1-200X Chlorinated polyvinyl chloride (PVC-C) piping systems for hot and cold water - Part 1: General
GB/T XXXX.2-200X Chlorinated polyvinyl chloride (PVC-C) piping systems for hot and cold water - Part 2: Pipes to be released
GB/T XXXX.3-200X Chlorinated polyvinyl chloride (PVC-C) piping systems for hot and cold water - Part 3: Pipe fittings to be released
GB/T XXXX.1-200X Chlorinated polyvinyl chloride (PVC-C) piping systems for hot and cold water - Part 1: General; to be released
GB/T XXXX.2-200X Chlorinated polyvinyl chloride (PVC-C) piping systems for hot and cold water - Part 2: Pipes;
GB/T XXXX.1-200X aluminum-plastic composite pressure pipe aluminum pipe lap welding aluminum-plastic pipe to be released
GB/T XXXX.2-200X aluminum-plastic composite pressure pipe aluminum pipe with butt-welded aluminum-plastic pipe to be released
GB/T XXXX-200X thermoplastic pipes and fittings for hot and cold water systems to be released
Thermoplastics - Determination of tensile properties - Part 1 : Test methods
Plastics pipes for thermoplastics - Determination of tensile properties - Part 2: s. s. Pipe to be released
GB/T 8804.3-200X Thermoplastics tubes - Determination of tensile properties - Part 3: Polyolefin tubes to be released
GB/T XXXX.2-200X Plastic pipe, pipe fittings and valve terminology work
GB/T XXXX.1-200X ABS plastic pipe work
GB/T XXXX.1-200X Polyvinyl chloride (PVC-U) pipe elastic sealing ring socket joint - bending angle test method national standard
GB/T XXXX.2-200X Polyvinyl chloride (PVC-U) pipe elastic sealing ring socket joint - negative pressure test method
GB/T XXXX.2-200X Plastic pipe opacity test method
GB/T XXXX.2-200X Hot and cold water thermoplastic pipe system pipe fittings system thermal cycle test method
Preparation of GB/T XXXX.2-200X polyethylene (PE) electrofusion assembly
GB/T XXXX.2-200X polyethylene (PE) electrofusion assembly peeling test method
GB/T XXXX.2-200X polyethylene (PE) electrofusion assembly extrusion peel test method
GB/T XXXX.2-200X polyethylene pipe resistance to slow crack growth cone experimental method
GB/T XXXX.2-200X Determination of resistance to crack propagation (RCP) of thermoplastic pipes for fluid transport
GB/T XXXX.2-200X Polybutene (PB) piping systems for hot and cold water - Part 1: General;
GB/T XXXX.2-200X Polybutene (PB) piping systems for cold and hot water - Part 2
GB/T XXXX.2-200X PE structure wall buried in the drain pipe part 2 PE wrapped plastic pipe
GB/T XXXX.2-200X Buried Polychlorinated Structural Pipe Systems - Part 1: PE Double Wall Corrugated Pipes
Overhead sectional door most widely used for loading areas on all types of industrial premises and Designed with a curved overhead track, these vertically-opening sectional doors can be installed in areas with reduced head room. They provide heat and sound insulation with its composite panel construction.
The counterbalance and cable system provides quiet and straight forward operation for manual doors. Electric operation is available for larger applications that can incorporate many alternative operator options to suit all client requirements.
The standard outer panels are manufactured from 0.5mm thick, high quality zinc coating to BS EN 10147
For the best weather protection the sectional door panel has an interlocking hinged joint integrating a high quality seal the full length of the panel.
A counterbalance system is incorporated into the sectional overhead door to ensure efficient and effortless operation.
The counterbalance comprises of springs mounted on a steel shaft that are high tensile helical wound steel. It has been heat treated for enhanced performance for around 50,000 cycles.
Reducing shaft friction is achieved with the aid of brackets and guide rollers incorporating highest quality sealed bearings.
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