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Information Name: | Changchun polyurethane insulation lowest price |
Published: | 2014-03-10 |
Validity: | 200000 |
Specifications: | Complete |
Quantity: | 1.00 |
Price Description: | |
Detailed Product Description: | Three-tier structure from the inside to the outside of the first layer: Working pipe layer according to the requirements of customers design and selection generally seamless (GB8163-87) spiral welded pipe (GB9711-88; SY/T5038-92) and Longitudinal (GB3092 -93). Advanced steel surface after shot blasting process, steel rust rating of up to GB8923-1988 standard of Sa2 level, surface roughness up GB6060.5-88 standard R = 12.5 microns. Second layer: polyurethane thermal insulation in the cavity with a high pressure foaming machine pipe is formed between the outer sheath of the disposable liquid injected from a rigid polyurethane foam. Commonly known as "pipe-in-pipe foaming process." First, its role waterproof, and second insulation, three heating network is to support the weight. When the transmission medium temperature: -50 ℃ -120 ℃, the choice of rigid poly-ester foams do semicarbazide insulation. Third layer: High density polyethylene protective layer of a certain thickness preformed black (yellow) plastic pipe, its role first, polyurethane insulation protection against mechanical damage a hard object, the second is anticorrosion and waterproof. Polyethylene outer tube made of high-density polyethylene material with high mechanical strength and excellent corrosion resistance, can protect the pipe to avoid damage caused by external factors in the transportation, installation and use. Manufacturing jacket pipe should be added antioxidants, UV stabilizers and carbon black. Production 1, 2 feeding, extrusion 3, 4 molds, cooled 5, traction 6, 7 inner surface corona treatment, cutting 8, 9 inspection, product description A. polyethylene pipe easy to aging, such as open storage is appropriate canopy cloth and other objects covered dump should stay away from high heat and ignition sources, pipe insulation made after the ban exposure, quenching, otherwise polyethylene pipe easy to crack, affect product performance and service life. B. Transport and wear tube process, should avoid rough handling, hooks too small, tough, excessive force, otherwise easily lead to polyethylene pipe broke, scratched or torn. C. adjustable pipe wall thickness, thickness, color according to user requirements, due to different pipe wall thickness, insulation thickness is approximately the number of actual thickness should be calculated. D. supporting bracket and pipe, plastic plugs, two flanges, welding, torch, thermal belt complete. E. table allowable deviation is based CJ/114-2000 industry standards. The formula is: when the external diameter ≤ 400mm, and the upper and lower deviation = 0.1 × 0.2 nominal wall thickness outside diameter ≥ 400mm, and the upper and lower deviation = 0.15 × nominal wall thickness of the polyethylene casing Unit Index +0.2 polyurethane unit test method To Test Method for Tensile Strength Index Mpa ≥ 20 GB/T8804 density kg/m3 ≥ 60 GB/T6343 Elongation%> 350 GB/T8804 Tensile strength Kpa ≥ 200 GB/T6343 tear strength Mpa> 20 GB / T8804 tensile strength Kpa ≥ 200 GB/T6343 notched impact strength T / mm 10 ISC179-82 Tensile strength Kpa ≥ 200 Vicat softening point ℃ ≥ 120 iso306-74 Thermal conductivity W / mk ≤ 0.033 IGB/T10297 brittle temperature ℃ ≤ 50 Astmc746-97 cold ℃ ≥ -50 Astmd477-76 electrical breakdown strength Kv / mm> 30 GB1408-78 cold ℃ <50 10% HclNaoh Nacl excellent Astmd543-67-absorbent Kg/m2 ≤ 0.2 ISO2896-74 |
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Copyright © GuangDong ICP No. 10089450, Chemical Insulation Materials Co., Ltd. Langfang Venus All rights reserved.
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You are the 5465 visitor
Copyright © GuangDong ICP No. 10089450, Chemical Insulation Materials Co., Ltd. Langfang Venus All rights reserved.
Technical support: ShenZhen AllWays Technology Development Co., Ltd.
AllSources Network's Disclaimer: The legitimacy of the enterprise information does not undertake any guarantee responsibility