Active Member
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[China]
Address: Room1409, Building No.2, Yabao Oriental International, Jinshui East Road, Zhengdong New District, Zhengzhou city, Henan province, China
Contact name:sales01
Henan Wein Industry Co., Ltd. |
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Gas Drainage Plastic Coated Steel Tube Spiral Welded Corrugated Steel Pipe
Mine pipe refers to a product specially developed for special
underground environmental conditions, which has the advantages of
flame retardant, antistatic, corrosion resistance, long service
life and strong safety. It is mainly used in five systems: mine
drainage pipe (KS), mine grouting pipe (KJ), mine positive pressure
air pipe (KFZ), mine negative pressure air pipe (KFF), mine gas
drainage pipe (KW).
size:HOSP-TEP(PE)-KW(-0.097)/101.6～1118
size:DN100mm～DN1000mm
Pressure Grade
Pipeline for gas drainage in underground coal mine, bearing
pressure - 0.097 - 1.0 MPa.
Performance characteristics
1) Light weight of pipe: the base pipe is spirally welded corrugated steel pipe, which is thinner than other pipes of the same specification and type. It greatly reduces the weight of pipe and is convenient for transportation and installation in underground coal mine. It reduces the labor intensity and improves the construction efficiency.
2) High stiffness of pipe ring: high negative pressure performance, ring stiffness to meet SN16.
3) Chemical corrosion resistance, weathering resistance and aging resistance are very high: the coating can prevent metal oxidation, and has the corrosion resistance of acid, alkali and salt. The product has excellent anti-aging performance, and its service life is much higher than other pipes. The product can be painted with flange to ensure the anticorrosion effect of the whole pipeline.
4) Flame retardant and antistatic performance is good: flame retardant and antistatic indicators meet the requirements of underground gas drainage pipe indicators. Flame retardant: The arithmetic average of flameless combustion time is less than 3S and the maximum is less than 10s; the arithmetic average of flameless combustion time is less than 20s and the maximum is less than 60s. Antistatic: internal and external surface resistance≤1.0×106Ω
5) Good hygienic performance, low fluid resistance: in line with the drinking water standards of the Ministry of Health, no fouling, no breeding of microorganisms, no secondary pollution of fluids. The inner wall is smooth and the conveying efficiency is high.
6) Connection modes are diversified and easy to construct: Flange connection and butt welding connection can be used for products. Connection modes are diversified and installation is convenient.
7) Internal and external coatings can be made of different materials or colors according to customer's service environment and requirements.
8) Coating adhesion is strong: physical method is used for advanced treatment of the base pipe. The pretreatment meets Sa2.5 standard. Microcomputer is used for automatic preheating control and production. Coating adhesion is higher than national standard.
National Standard Specification and Coating Thickness
| DN | internal coating | external coating | ||||
| Ordinary level | Reinforcement level | polyethylene | epoxy resin | |||
| Ordinary level | Reinforcement level | Ordinary level | Reinforcement level | |||
| 15 | ＞0.4 | ＞0.3 | ＞0.5 | ＞0.6 | ＞0.3 | ＞0.35 |
| 20 | ||||||
| 25 | ||||||
| 32 | ||||||
| 40 | ||||||
| 50 | ||||||
| 65 | ||||||
| 80 | ＞0.5 | ＞0.35 | ＞0.6 | ＞1.0 | ＞0.35 | ＞0.4 |
| 100 | ||||||
| 125 | ||||||
| 150 | ||||||
| 200 | ＞0.6 | ＞0.8 | ＞1.2 | |||
| 250 | ||||||
| 300 | ||||||
| 350 | ＞1.3 | |||||
| 400 | ||||||
| 450 | ||||||
| 500 | ||||||
| 550 | ＞0.8 | ＞0.4 | ＞1.0 | ＞1.5 | ＞0.4 | ＞0.45 |
| 600 | ||||||
| 650 | ||||||
| 700 | ||||||
| 750 | ||||||
| 800 | ＞1.0 | ＞0.45 | ＞1.2 | ＞1.8 | ＞0.45 | ＞0.5 |
| 850 | ||||||
| 900 | ||||||
| 1100 | ||||||
| 1200 | ||||||
| 1400 | ||||||
| 1600 | ||||||
| Remarks | Seamless steel pipe, spiral welded pipe and straight welded pipe can be selected as the base pipe, and the thickness of plastic coating can be processed according to customer's requirements. | |||||
Properties of Epoxy resin powder
| Item | Requirement | Test method |
| Density(g/cm2) | 1.3~1.5 | GB/T 1033 |
| Particle size distribution /% | 150um≤3；250um≤0.2 | GB/T 6554 |
| nonvolatile content /% | ≥99.5 | GB/T 6554 |
| Horizontal liquidity /mm | 22~28 | GB/T 6554 |
| Gelation time /s | ≤120(200℃) | GB/T 6554 |
| impact strength /(kgcm) | ≥50 | GB/T 1732 |
| Bending test /(¢2 mm) | pass | GB/T 6742 |
| Hygienic performance | Conform to GB/T 17219 | |
Properties of Polyethylene Powder
| Item | Requirement | Test method |
| Density(g/cm2) | ＞0.91 | GB/T 1033 |
| tensile strength /MPa | ＞9.80 | GB/T 1040 |
| elongation at break /% | ＞300 | GB/T 1040 |
| vicat softening point /℃ | ＞85 | GB/T 1633 |
| nonvolatile content /% | ＞99.5 | GB/T 2914 |
| Hygienic performance | Conform to GB/T 17219 | |
