20 #Q355B and other fertilizer equipment high-pressure seamless pipe

Short Description:

Fertilizer special pipe GB6479-2000 refers to seamless steel pipe for high pressure fertilizer equipment. It is mainly used for conveying high temperature and high pressure fluid pipelines on fertilizer equipment. The representative materials are 20, 16Mn, 12CrMo, 12Cr2Mo, etc.

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Product Detail

Product Tags

Product introduction

Steel pipes for chemical fertilizer are mainly used to manufacture high-quality carbon structural steel, alloy structural steel and stainless heat-resistant steel high-pressure seamless steel for steam boiler pipes with high pressure and above the tubes and these boiler tubes work under high temperature and high pressure, and the tubes will be oxidized and corroded under the action of high-temperature flue gas and steam. Therefore, the steel tubes are required to have high lasting strength, high oxidation resistance, and good organizational stability. The steel grades used are: high-quality carbon structural steel grades are 20G, 20MnG, 25MnG; Alloy structural steel grades 15MoG, 20MoG, 12CrMoG, 15CrMoG, 12Cr2MoG, 12CrMoVG, 12Cr3MoVSiTiB, etc; The common 1Cr18Ni9 and 1Cr18Ni11Nb high-pressure boiler tubes made of rusty and heat-resistant steel shall be subject to hydrostatic test, flaring and flattening test one by one in addition to ensuring the chemical composition and mechanical properties. The special steel tubes for chemical fertilizer shall be delivered in the heat treatment state.

Applicable environment

The special pipe for fertilizer (GB6479-2000) is a high-quality carbon structural steel and alloy steel seamless steel pipe suitable for chemical equipment and pipes with working temperature of - 40~400 ℃ and working pressure of 10~30Ma.

High pressure alloy pipe for fertilizer equipment (GB6479-2000) is a high-quality carbon structural steel and alloy steel seamless steel pipe suitable for chemical equipment and pipes with working temperature of - 40~400 ℃ and working pressure of 10~30Ma.

Production introduction

(1) Manufacturing method:

①The use temperature of steel pipes for fertilizer is below 450 ℃, and domestic pipes are mainly made of hot rolled or cold drawn 10 # and 20 # carbon bonded steel pipes.

②The special steel pipe for fertilizer is often used under high temperature and high pressure, and the pipe will be oxidized and corroded under the action of high-temperature flue gas and water vapor. The steel pipe is required to have high lasting strength, high oxidation and corrosion resistance, and good organizational stability.

(2) Purpose:

①Steel pipes for chemical fertilizer are mainly used to manufacture water wall pipes, boiling water pipes, superheated steam pipes, superheated steam pipes for locomotive boilers, large and small smoke pipes and arch brick pipes.

②The steel pipe specially used for fertilizer is mainly used to manufacture superheater pipe, reheater pipe, air duct, main steam pipe, etc. of high-pressure and ultra-high pressure boiler.

Product Display

Process flow of sanitary mirror tube:

Tube blank -- inspection -- peeling -- inspection -- heating -- piercing -- pickling -- grinding -- lubrication and air drying -- welding head -- cold drawing -- solution treatment -- pickling -- pickling and passivation -- inspection -- cold rolling -- degreasing -- cutting head -- air drying -- internal polishing -- external polishing -- inspection -- identification -- finished product packaging

Industrial pipe process flow

Tube blank -- inspection -- peeling -- inspection -- heating -- piercing -- pickling -- mushroom repair -- lubrication and air drying -- welding head -- cold drawing -- solution treatment -- pickling -- pickling and passivation -- inspection

Chemical composition of fertilizer tubes

Brand	Chemical composition (mass fraction) (%)
	C	Si	Mn	-	-	Cr	Mo
10	0.07~0.14	0.17~0.37	0.35~0.65	0.040	0.035	-	-
20G	0.17~0.24	0.17~0.37	0.35~0.65	0.035	0.035	-	-
16Mn	0.12~0.20	0.20~0.60	1.20~1.60	0.040	0.040	-	-
15MnV	0.12~0.18	0.20~0.60	1.20~1.60	0.040	0.040	0.04~0.12	-
10MoWVNb	0.07~0.13	0.50~0.80	0.50~0.80	0.030	0.040	0.30~0.50	0.60~0.90
12CrMo	0.08~0.15	0.17~0.37	0.40~0.70	0.040	0.035	0.40~0.70	0.40~0.55
15CrMo	0.12~0.18	0.17~0.37	0.40~0.70	0.040	0.035	0.80~1.10	0.40~0.55
1Cr5Mo	≤0.15	≤0.50	≤0.60	0.030	0.035	4.00~6.00	0.40~0.60
12Cr2Mo	0.08~0.15	0.40~0.70	≤0.50	0.035	0.035	2.00~2.50	0.90~1.20

Specification of fertilizer pipe

Specification	Specification	Specification	Specification
48*5	53*11	57*15	68*6
48*5.5	53*12	58*1.8	68*6.3
48*6	53*14	58*11	68*7
48*6.5	53*1.5	60*2	68*8
48*7	53*6	60*2.5	68*9
48*8	54*2	60*3	68*10
48*8.5	54*2.5	60*3.5	68*11
48*9	54*3	60*4	68*12
48*10	54*3.5	60*4.5	68*12.5
48*11	54*4	60*5	68*14
48*12	54*4.5	60*5	68*16
49*4	54*5	60*5.5	70*3.5
49*10	54*5.5	60*6	70*4
50*1.5	54*6	60*6.5	70*4
50*2	54*6.5	60*7	70*4.5
50*2.5	54*7	60*7.5	70*5
50*3	54*8	60*8	70*6
50*3.5	54*8.5	60*9	70*6.5
50*4	54*9	60*10	70*7
50*4.5	54*10	60*11	70*8
50*5	54*11	60*12	70*9
50*6	54*12	60*14	70*10
50*7	54*14	63.5*2	70*11
50*8	55*4.5	63.5*3	70*12
50*9	55*5.5	63.5*3.5	70*14
50*9	56*4	63.5*4	70*16
50*10	56*4.5	63.5*4.5	73*3
50*11	56*5	63.5*5	73*3.5
50*12	56*6	63.5*5.5	73*4
51*1.8	56*9	63.5*6	73*4.5
51*3	57*3	63.5*7	73*5
51*3.5	57*3.5	63.5*8	73*5.5
51*3.6	57*4	63.5*9	73*6
51*3.8	57*4.5	63.5*10	73*7
51*4	57*5	63.5*14	73*8
51*4.5	57*5.5	63.5*15	73*10
51*5	57*6	63.5*16	73*11
51*5.5	57*7	68*3	73*12
51*6	57*8	68*3.5	73*12.5
51*7	57*9	68*4	73*14
51*8	57*9.5	68*4	73*15
51*8.5	57*10	68*4.5	73*16
51*9	57*12	68*5	73*18