PE gas pipe International PE gas pipe material is divided into PE32, PE40, PE63, PE80, PE100 five levels, The materials used for gas pipes and water supply pipes are mainly PE80 and PE100. China's polyethylene pipe material is not graded, which makes the domestic polyethylene gas pipe and feed pipe manufacturers to choose more difficult raw materials, but also to the use of polyethylene pipe has brought no small hidden dangers.
Therefore, the National Bureau of Standards in GB / T13663-2000 new standards made a lot of amendments to the provisions of the different levels of water supply pipe PE80 and PE100 corresponding to different pressure intensity, And to remove the old standard tensile strength performance, while increasing the elongation at break (greater than 350%), that emphasizes the basic toughness.
PE gas pipe implementation of standards: GB 15558.1-2003.
Gas pipe with PE is a traditional steel pipe, PVC gas generation products.
Gas pipe must withstand some pressure, usually to use large molecular weight, good mechanical properties of PE resin, such as HDPE resin. LDPE resin, low tensile strength, pressure resistance, poor rigidity, poor dimensional stability of the molding process, And the connection is difficult, not suitable as a feed water pressure tube material. However, due to its high health indicators, LDPE, especially LLDPE resin has become a commonly used gas pipe material. LDPE, LLDPE resin melt viscosity, good fluidity, easy processing, and thus the choice of its melt index range is also wide, usually MI in the 0.3-3g / 10min.
PE gas pipe product features:
Good health performance: PE pipe processing does not add heavy metal salt stabilizer, non-toxic material, no scaling layer, does not breed bacteria, a good solution to the secondary pollution of drinking water in the city.
Excellent corrosion resistance: In addition to a few strong oxidants, resistant to erosion of a variety of chemical media; No electrochemical corrosion.
Long life: Under rated temperature, pressure conditions, PE pipe can be safely used for more than 50 years.
Better impact resistance: PE pipe toughness, high impact strength, weight directly over the pipeline, will not lead to pipeline broken violent.
Reliable connection performance: strength hot melt or fused PE pipe interface higher than the pipe body, the seam will not be disconnected due to soil movement or live load.
PE gas pipe:
Executive Standard: GB 15558.1-2003
Wall thickness: mm Price: yuan / m
Public
Said
Outside
Trail
dn
PE80
PE100
SDR17.6
SDR11
SDR17.6
SDR11
Pressure ≤0.2MPa
Pressure ≤ 0.4MPa
Pressure ≤ 0.6MPa
Pressure ≤1.0MPa
Wall thickness
Price
Wall thickness
Price
Wall thickness
Price
Wall thickness
Price
20
2.3
4.75
3.0
5.83
2.3
4.79
3.0
5.90
25
2.3
6.08
3.0
7.56
2.3
6.16
3.0
7.63
32
2.3
7.96
3.0
10.01
2.3
8.06
3.0
10.04
40
2.3
10.12
3.7
15.41
2.3
10.22
3.7
15.55
50
2.9
15.70
4.6
23.98
2.9
15.84
4.6
24.08
63
3.6
24.55
5.8
38.88
3.6
24.80
5.8
38.16
75
4.3
34.92
6.8
52.56
4.3
35.28
6.8
53.28
90
5.2
50.40
8.2
76.68
5.2
51.12
8.2
77.04
110
6.3
74.52
10.0
113.04
6.3
75.24
10.0
114.48
125
7.1
95.76
11.4
147.24
7.1
96.48
11.4
148.32
140
8.0
119.88
12.7
183.60
8.0
120.96
12.7
184.68
160
9.1
156.24
14.6
240.48
9.1
158.04
14.6
242.64
180
10.3
198.72
16.4
304.20
10.3
200.88
16.4
342.72
200
11.4
244.08
18.2
374.40
11.4
