3PE anti-corrosion steel pipe for long-lasting durability

High-performance 3PE anti-corrosion steel pipe

3pe anti-corrosion steel pipe

3PE anti-corrosion steel pipe is designed with a three-layer polyethylene coating to provide superior corrosion resistance, making it ideal for long-term use in harsh environments.

Introduction of 3pe anticorrosion steel pipe:

3PE anticorrosion steel pipe refers to the steel pipe protected by three-layer structural polyethylene (3PE) anticorrosion coating on the outer wall. Its parent material covers seamless steel pipe, spiral steel pipe and straight seam steel pipe.

3pe anticorrosion steel pipe outer wall anticorrosion form:

1, the bottom layer of epoxy powder:
This layer is closely attached to the surface of the steel pipe through the electrostatic spraying process, the thickness of which is usually 0.1 – 0.3 mm. Epoxy powder has excellent adhesion and chemical corrosion resistance, can effectively isolate the steel pipe and the external corrosive media, to provide basic protection for the steel pipe.

2, intermediate adhesive layer:
thickness is generally 0.1 – 0.2 mm, it plays the role of a bridge, the bottom layer of epoxy powder and the outer layer of polyethylene firmly bonded together, to ensure the integrity and stability of the three-layer structure, to enhance the overall protective effect.

3、Outer layer polyethylene:
Thickness is 1.8 – 3.7 millimeters, it has good mechanical properties and anti-aging properties, it can resist the damage of external factors such as ultraviolet rays, abrasion, impact and other external factors on the steel pipe, further extend the service life of the steel pipe and provide reliable protection.

3pe anticorrosion steel pipe execution standard:

Standard Name	Standard Number	Scope of Application	Coating Thickness	Adhesion
Chinese National Standard	GB/T 23257-2017	Buried steel pipelines	Total thickness ≥ 0.3mm, Enhanced grade 2.5-3.7mm	Peel strength ≥ 30N/cm
Chinese Industry Standard	SY/T 0413-2002	Buried steel pipelines	Refer to German DIN30670 standard	Peel strength ≥ 30N/cm
International Standard	ISO 21809	Petroleum and natural gas pipelines	Total thickness ≥ 0.3mm	High adhesion, Peel strength ≥ 30N/cm
American Petroleum Institute Standard	API 5L	Petroleum and natural gas pipelines	As per specific project requirements	High adhesion
European Standard	EN 10208-2	Petroleum and natural gas pipelines	As per specific project requirements	High adhesion

Detailed parameter description:

1. Coating structure:
Epoxy powder (FBE): base layer, thickness >100μm, providing good adhesion and corrosion resistance.
Adhesive (AD): middle layer, thickness 170-250μm, connecting epoxy powder and polyethylene.
Polyethylene (PE): outer layer, thickness 1.8-3.7mm, providing abrasion and impact resistance.

2, coating thickness:
National standard GB/T 23257-2017 requires total thickness ≥ 0.3mm, reinforced grade 2.5-3.7mm.
International standards such as ISO 21809 and API 5L also require a total thickness of ≥ 0.3mm.

3, adhesion:
All standards require a strong adhesion of the coating to the surface of the steel pipe and a peel strength of ≥ 30N/cm.

4, impact resistance:
Impact strength Requirements ≥ 10J, to ensure that the coating is not easily damaged during construction and use.

5, corrosion resistance:
3PE coating has excellent chemical resistance and soil corrosion resistance, suitable for the transportation of oil, natural gas, sewage and other media.

6, other requirements:
The surface treatment of steel pipe needs to reach Sa2.5 level to ensure the adhesion of the coating.
The surface of the coating should be flat and smooth, without bubbles, cracks and other defects.

Pipe Diameter	20mm-1600mm
Wall Thickness	2-20mm optional, to meet different pressure requirements.
Material	Q235B, Q345B
Anticorrosion layer thickness	General bottom epoxy powder 0.1-0.3mm, intermediate adhesive 0.1-0.2mm, outer polyethylene 1.8-3.7mm.
Coating adhesion	More than 100N/cm to ensure strong coating.
Impact resistance	Above 5J, strong resistance to external impact.
Compressive strength	It can withstand certain pressure and meet the requirements of pipeline operation.
Execution standard	GB/T 23257-2017, ISO, ASTM
Service life	Up to 20-50 years under normal environment.
Connection	Welding, flange connection, groove connection, etc.

Theoretical Weight

1、Theoretical weight LSAW steel pipe theoretical weight table:
OD: mm
Wall thickness: mm
Theoretical weight: Kg/m

OD/WT		2.5	3	3.5		4		4.5		5		5.5	6	6.5	7	7.5
32		1.82	2.15	2.46		2.76		3.05		3.33		3.59	3.85	4.09	4.32	4.53
38		2.19	2.59	2.98		3.35		3.72		4.07		4.41	4.74	5.05	5.35	5.64
42		2.44	2.89	3.35		3.75		4.16		4.56		4.95	5.33	5.69	6.04	6.38
45		2.62	3.11	3.58		4.04		4.49		4.93		5.36	5.77	6.17	6.56	6.94
50		2.93	3.48	4.01		4.54		5.05		5.55		6.04	6.51	6.97	7.42	7.86
54		-	3.77	4.36		4.93		5.49		6.04		6.58	7.10	7.61	8.11	8.60
57		-	4.00	4.62		5.23		5.83		6.41		6.99	7.55	8.10	8.63	9.16
60		-	4.22	4.88		5.52		6.16		6.78		7.39	7.99	8.58	9.15	9.71
63.5		-	4.48	5.18		5.87		6.55		7.21		7.87	8.51	9.14	9.75	10.36
68		-	4.81	5.57		6.31		7.05		7.77		8.48	9.17	9.86	10.53	11.19
70		-	4.96	5.74		6.51		7.27		8.01		8.75	9.47	10.18	10.88	11.56
73		-	5.18	6.00		6.81		7.60		8.38		9.16	9.91	10.66	11.39	12.11
76		-	5.40	6.26		7.10		7.93		8.75		9.56	10.36	11.14	11.91	12.67
83		-	-	6.86		7.79		8.71		9.62		10.51	11.39	12.26	13.12	13.96
89		-	-	7.38		8.38		9.38		10.36		11.33	12.28	13.22	14.16	15.07
95		-	-	7.90		8.98		10.04		11.10		12.14	13.17	14.19	15.19	16.18
102		-	-	8.50		9.67		10.82		11.96		13.09	14.21	15.31	16.40	17.48
108		-	-	-		10.26		11.49		12.70		13.90	15.09	16.27	17.44	18.59
114		-	-	-		10.85		12.15		13.44		14.72	15.98	17.23	18.47	19.70
OD/WT	3.0		3.2		3.5		4.0		4.5		5.0		5.5	6.0	6.5	7.0
(76)	5.40		5.75		6.26		7.10		7.93		8.75		9.56	10.36	11.14	11.91
80	5.69		6.07		6.60		7.49		8.37		9.24		10.07	10.91	11.75	12.59
(83)	5.92		6.31		6.86		7.79		8.71		9.62		10.51	11.39	12.26	13.12
85	6.06		6.46		7.04		7.98		8.93		9.86		10.75	11.65	12.55	13.45
(89)	6.36		6.77		7.38		8.38		9.38		10.38		11.33	12.28	13.22	14.16
90	6.43		6.86		7.47		8.47		9.49		10.47		11.42	12.39	13.35	14.31
95	6.81		7.26		7.90		8.98		10.04		11.10		12.14	13.17	14.19	15.19
100	7.17		7.65		8.32		9.46		10.59		11.71		12.77	13.87	14.95	16.03
(102)	7.32		7.81		8.50		9.67		10.82		11.96		13.09	14.21	15.31	16.40
(108)	7.77		8.29		9.02		10.26		11.49		12.70		13.90	15.09	16.27	17.44
110	7.92		8.43		9.19		10.46		11.70		12.93		14.19	15.40	16.60	17.75
120	8.66		9.22		10.06		11.44		12.93		14.30		15.51	16.89	18.20	19.50
125	9.02		9.61		10.50		11.91		13.37		14.80		16.15	17.55	19.02	20.35
130	9.40		10.00		10.92		12.43		13.92		15.48		16.88	18.35	19.80	21.20
(133)	9.59		10.25		11.18		12.75		14.26		15.75		17.29	18.79	20.28	21.75
140	10.11		10.79		11.80		13.42		15.05		16.65		18.24	19.83	21.40	22.96
150	10.85		11.52		12.65		14.39		16.11		17.85		19.55	21.25	23.00	24.68
160	-		-		13.53		15.38		17.25		19.09		20.96	22.79	24.60	26.41
170	-		-		14.31		16.31		18.35		20.30		22.31	24.27	26.21	28.14
180	-		-		15.20		17.30		19.50		21.59		23.67	25.75	27.81	29.87
190	-		-		-		18.29		20.60		22.80		25.02	27.22	29.41	31.59
200	-		-		-		19.67		21.65		24.00		26.38	28.70	31.02	33.32

2、Seamless steel pipe theoretical weight table:
OD: mm
Wall thickness: mm
Theoretical weight: Kg/m

OD/WT	2.5		3		3.5		4		4.5		5		5.5		6		6.5		7		7.5
32	1.82		2.15		2.46		2.76		3.05		3.33		3.59		3.85		4.09		4.32		4.53
38	2.19		2.59		2.98		3.35		3.72		4.07		4.41		4.74		5.05		5.35		5.64
42	2.44		2.89		3.35		3.75		4.16		4.56		4.95		5.33		5.69		6.04		6.38
45	2.62		3.11		3.58		4.04		4.49		4.93		5.36		5.77		6.17		6.56		6.94
50	2.93		3.48		4.01		4.54		5.05		5.55		6.04		6.51		6.97		7.42		7.86
54	-		3.77		4.36		4.93		5.49		6.04		6.58		7.10		7.61		8.11		8.60
57	-		4.00		4.62		5.23		5.83		6.41		6.99		7.55		8.10		8.63		9.16
60	-		4.22		4.88		5.52		6.16		6.78		7.39		7.99		8.58		9.15		9.71
63.5	-		4.48		5.18		5.87		6.55		7.21		7.87		8.51		9.14		9.75		10.36
68	-		4.81		5.57		6.31		7.05		7.77		8.48		9.17		9.86		10.53		11.19
70	-		4.96		5.74		6.51		7.27		8.01		8.75		9.47		10.18		10.88		11.56
73	-		5.18		6.00		6.81		7.60		8.38		9.16		9.91		10.66		11.39		12.11
76	-		5.40		6.26		7.10		7.93		8.75		9.56		10.36		11.14		11.91		12.67
83	-		-		6.86		7.79		8.71		9.62		10.51		11.39		12.26		13.12		13.96
89	-		-		7.38		8.38		9.38		10.36		11.33		12.28		13.22		14.16		15.07
95	-		-		7.90		8.98		10.04		11.10		12.14		13.17		14.19		15.19		16.18
102	-		-		8.50		9.67		10.82		11.96		13.09		14.21		15.31		16.40		17.48
108	-		-		-		10.26		11.49		12.70		13.90		15.09		16.27		17.44		18.59
114	-		-		-		10.85		12.15		13.44		14.72		15.98		17.23		18.47		19.70
OD/WT		2.5		3		3.5		4		4.5		5		5.5		6		6.5		7		7.5
121		-		-		-		11.54		12.93		14.30		15.67		17.02		18.35		19.68		20.99
127		-		-		-		12.13		13.59		15.04		16.48		17.90		19.32		20.72		22.10
133		-		-		-		12.73		14.26		15.78		17.29		18.79		20.28		21.75		23.21
140		-		-		-		-		15.04		16.65		18.24		19.83		21.40		22.96		24.51
146		-		-		-		-		15.70		17.39		19.06		20.72		22.36		24.00		25.62
152		-		-		-		-		16.37		18.13		19.87		21.60		23.32		25.03		26.73
159		-		-		-		-		17.15		18.99		20.82		22.64		24.45		26.24		28.02
168		-		-		-		-		-		20.10		22.04		23.97		25.89		27.79		29.69
180		-		-		-		-		-		21.59		23.70		25.75		27.70		29.87		31.91
194		-		-		-		-		-		23.31		25.60		27.82		30.00		32.28		34.50
203		-		-		-		-		-		-		-		29.14		31.50		33.83		36.16
219		-		-		-		-		-		-		-		31.52		34.06		36.60		39.12
245		-		-		-		-		-		-		-		-		38.23		41.09		43.85
273		-		-		-		-		-		-		-		-		42.64		45.92		49.10
299		-		-		-		-		-		-		-		-		-		-		53.91
325		-		-		-		-		-		-		-		-		-		-		58.74

3、Theoretical weight table of spiral steel pipe:
Outer diameter: mm
Wall thickness: mm
Theoretical weight: Kg/m

OD/WT	5.0	5.5	6.0	7.0	8.0	9.0	10.0	11.0	12.0	13.0	14.0	15.0	16.0	18.0	20.0	22.0
219	26.39	28.96	31.51	36.60	41.63
273	33.04	36.28	39.51	45.92
325	39.46	43.33	47.26	54.90	62.54	70.13
377	45.88	50.39	54.89	63.87	72.80	81.67
426	51.91	57.03	62.14	72.33	82.46	92.55	102.59
457	55.73	61.24	66.73	77.69	88.58	99.43	110.23	120.98	131.60	142.34
508			74.28	86.48	98.64	110.75	122.81	134.82	146.78	158.69
529			77.38	90.11	102.78	115.41	127.99	140.51	152.99	165.42
559			81.82	95.29	108.70	122.07	135.38	148.65	161.87	175.04
610			89.37	104.09	118.76	133.39	147.96	162.48	176.96	191.39
630			92.33	107.54	122.71	137.82	152.89	167.91	182.88	197.80
660			96.77	112.72	128.63	144.48	160.29	176.05	191.76	207.42
720			105.64	123.08	140.46	157.80	175.09	192.32	209.51	226.65
820				140.34	160.19	179.99	199.75	219.45	239.10	258.71	276.26	297.77	317.23	256.01	394.58	432.96
914					178.74	200.06	222.93	244.95	266.92	288.84	310.72	332.54	354.31	397.74	440.95	483.96
920					179.92	202.19	224.41	246.58	268.70	290.77	312.79	334.76	356.68	400.40	443.91	486.13
1016					198.86	223.49	248.08	272.62	297.10	321.54	345.93	370.27	394.56	443.02	491.26	539.30
1020					199.65	224.38	249.07	273.70	298.39	322.82	347.31	371.75	396.14	44.79	493.23	541.47
1220							296.39	327.95	357.47	386.94	416.36	445.73	475.58	533.58	591.88	649.98
1420							347.71	362.21	416.66	451.06	485.41	519.71	553.96	622.36	690.52	758.49
1620							397.03	436.46	475.84	515.17	554.46	593.60	632.87	711.14	789.17	867.00
1820							446.35	490.71	535.02	579.29	623.50	667.67	711.79	799.92	887.81	975.51
2020							495.67	544.96	594.21	643.40	692.55	741.65	796.70	888.70	986.46	1084.21
2220							544.99	599.21	653.39	707.52	761.60	815.63	869.61	977.48	1085.11	1192.53

Reviews

There are no reviews yet.

Be the first to review “3pe anti-corrosion steel pipe”