Basic Info.
Model NO.
Urea Grade Austenitic Stainless Seamless Pipe
Surface Treatment
Galvanized
Usage
Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose
Section Shape
Rectangular
Product Name
Urea Austenitic Seamless Stainless Steel Pipe
Keywords
Urea Stainless Steel Pipe
Tube Material
904L/254smo/410/430/316lmod/S31050/
Standard
GB /T 37578 - 2019
Grade
S31792/S31053/S31053
Common Standards 1
ASTM A312(ASME SA312)/ASTM A213(ASME SA213)
Common Standards 2
GB/T 14976/GB 13296/GOST 9941/En 10216-5/JIS G3459
Common Grade 1
304/L/H/Ln, 316/L/H/Ln/Ti/Lmod, 310S/H,317/L,321/H
Common Grade 2
347H/Hfg, N08904(904L), N08367, S31254(254smo)
Application 1
Large Boilers, Heat Exchangers, Condensers
Application 2
Evaporators and Fluid Transport
Transport Package
Standard Packaging or Customized
Specification
Standard Specifications or Customized
Product Description
LONGYU 904L S31254 316Lmod S91254 N08904 Urea Grade ASTM A249 TP304L Super Austenitic Stainless Seamless Steel Welded Heat Exchanger Tubes
Product Description
Jiangyin Longyu - a pipe and fitting factory that can process various materials.
10-year pipe material customization: ordinary stainless steel, duplex steel, super austenitic stainless steel, ferritic steel, alloy steel, titanium alloy steel, etc.
We are an all-in-one factory that combines welded pipes, seamless pipes, precision pipes, pipe fittings, etc. We have relatively fast delivery speed and control over product quality. "Guaranteed by the quality and developed by science", "Customer needs are the company's pursuit", we pursue "first-class products", "first-class reputation" and "first-class service". Our company is willing to establish honest cooperative relationships with friends from all walks of life for mutual benefit and common development. Welcome customers to Jiangyin Longyu Stainless Steel Welded Pipe Co., Ltd. for a visit and guidance.
| Process Classification | Physical polishing (MP) |
| Pickling and polishing (AP) |
| Bright annealing (BA) |
| Electrolyte pickling (EP) |
Urea Grade Austenitic Seamless Stainless Steel Pipe
Urea-grade stainless steel is austenitic stainless steel specially developed for high-temperature carbamate solutions (such as urea production). Urea grade stainless steel has strong corrosion resistance in high-temperature carbamate solution. The environment is generated when ammonium carbamate is used as a medium for the reaction of ammonia and carbon dioxide in urea production. It has strong resistance to local corrosion generated in the high-temperature carbamate environment of the high-pressure part of the urea equipment. 2522 stainless steel has little weight loss and local corrosion in the Huey test. 725LN is a fully austenitic structure and has a low content of non-metallic impurities. It is mainly used in the manufacture of urea production equipment.
This type of steel pipe is mainly used in the core components of synthetic ammonia and urea industry. The raw materials are obtained by electro-slag remelting.
In addition to focusing on cleanliness control in the production process, the focus is on the control of heat treatment links. They are all ultra-pure stainless steels, which mainly solve the problem of selective corrosion of ferrite in the ammonia environment during urea synthesis.
Austenitic stainless steel pipe has a stable austenite group at room temperature. The steel contains about 18% Cr, more than 8% Ni, and about 0.1% C. It has high corrosion resistance, good cold processing, and good toughness, plasticity, welding, and non-magnetic properties. It is widely used in heat exchangers, non-magnetic condensers, evaporators, and fluid transportation in chemical, oil refining, boilers, food, and other industries.
Super austenitic stainless steel pipe has higher cleanliness, uniformity, mechanical properties, finer structure, better surface quality, better resistance to local corrosion of harsh media, and better process manufacturing performance than ordinary austenitic stainless steel pipe.
It is a stainless steel developed for urea production based on 316L, with additional restrictions on the minimum content of Cr, Ni, and Mo; the purpose is to obtain a fully austenitic structure of stainless steel after the final heat treatment and to make the ferrite content not exceed 0.6%, and at the same time, requirements are put forward for intergranular corrosion tendency experiments and selective corrosion.
This material is specially used in the urea industry. Therefore, urea and 316l stainless steel are called. Urea and stainless steel need to undergo Hugh test and selective corrosion test.
Detailed Photos
Product Parameters
| Caliber Code | OD | SCH |
Nominal Diameter
DN | Inch | Outer Diameter
mm | SCH 5S | SCH 10S | SCH 40S | SCH 80S | SCH 10 | SCH 20 | SCH 30 | STD | SCH 40 | SCH 60 | XS | SCH 80 | SCH 100 | SCH 120 | SCH 140 | SCH 160 | XXS |
| 6 | 1/8 | Φ10.29 | - | 1.24 | 1.73 | 2.41 | - | - | - | 1.73 | 1.73 | | 2.41 | 2.41 | - | - | - | - | - |
| 8 | 1/4 | Φ13.72 | - | 1.65 | 2.24 | 3.02 | - | - | - | 2.24 | 2.24 | - | 3.02 | 3.02 | - | - | - | - | - |
| 10 | 3/8 | Φ17.14 | - | 1.65 | 2.31 | 3.20 | - | - | - | 2.31 | 2.31 | - | 3.20 | 3.20 | - | - | - | - | - |
| 15 | 1/2 | Φ21.34 | 1.65 | 2.11 | 2.77 | 3.73 | - | - | - | 2.77 | 2.77 | - | 3.73 | 3.73 | - | - | - | 4.78 | 7.47 |
| 20 | 3/4 | Φ26.67 | 1.65 | 2.11 | 2.87 | 3.91 | - | - | - | 2.87 | 2.87 | - | 3.91 | 3.91 | - | - | - | 5.56 | 7.82 |
| 25 | 1 | Φ33.4 | 1.65 | 2.77 | 3.38 | 4.55 | - | - | - | 3.38 | 3.38 | - | 4.55 | 4.55 | - | - | - | 6.35 | 9.09 |
| 32 | 1.1/4 | Φ42.16 | 1.65 | 2.77 | 3.56 | 4.85 | - | - | - | 3.56 | 3.56 | - | 4.85 | 4.85 | - | - | - | 6.35 | 9.70 |
| 40 | 1.1/2 | Φ48.26 | 1.65 | 2.77 | 3.68 | 5.08 | - | - | - | 3.68 | 3.68 | - | 5.08 | 5.08 | - | - | - | 7.14 | 10.15 |
| 50 | 2 | Φ60.32 | 1.65 | 2.77 | 3.91 | 5.54 | - | - | - | 3.91 | 3.91 | - | 5.54 | 5.54 | - | - | - | 8.74 | 11.07 |
| 65 | 2.1/2 | Φ73.02 | 2.11 | 3.05 | 5.16 | 7.01 | - | - | - | 5.16 | 5.16 | - | 7.01 | 7.01 | - | - | - | 9.53 | 14.02 |
| 80 | 3 | Φ88.9 | 2.11 | 3.05 | 5.49 | 7.62 | - | - | - | 5.49 | 5.49 | - | 7.62 | 7.62 | - | - | - | 11.13 | 15.24 |
| 90 | 3.1/2 | Φ101.6 | 2.11 | 3.05 | 5.74 | 8.08 | - | - | - | 5.74 | 5.74 | - | 8.08 | 8.08 | - | - | - | - | - |
| 100 | 4 | Φ114.3 | 2.11 | 3.05 | 6.02 | 8.56 | - | - | - | 6.02 | 6.02 | - | 8.56 | 8.56 | - | 11.13 | - | 13.49 | 17.12 |
| 125 | 5 | Φ141.3 | 2.77 | 3.40 | 6.55 | 9.53 | - | - | - | 6.55 | 6.55 | - | 9.53 | 9.53 | - | 12.70 | - | 15.88 | 19.05 |
| 150 | 6 | Φ168.28 | 2.77 | 3.40 | 7.11 | 10.97 | - | - | - | 7.11 | 7.11 | - | 10.97 | 10.97 | - | 14.27 | - | 18.26 | 21.95 |
| 200 | 8 | Φ219.08 | 2.77 | 3.76 | 8.18 | 12.70 | - | 6.35 | 7.04 | 8.18 | 8.18 | 10.31 | 12.70 | 12.70 | 15.09 | 18.26 | 20.62 | 23.01 | 22.23 |
| 250 | 10 | Φ273.05 | 3.40 | 4.19 | 9.27 | 12.70 | - | 6.35 | 7.80 | 9.27 | 9.27 | 12.70 | 12.70 | 15.09 | 18.26 | 21.44 | 25.40 | 28.58 | 25.40 |
Nominal Outer Diameter
D(mm) | Nominal Thickness
S(mm) |
| | 0.51 | 0.71 | 0.89 | 1 | 1.15 | 1.24 | 1.65 | 2.11 | 2.41 | 2.77 | 3.05 | 3.18 | 3.4 | 3.96 | 4.78 |
| Φ3.175 | × | × | × | | | | | | | | | | | | |
| Φ6.35 | | | × | × | × | × | × | | | | | | | | |
| Φ9.53 | | | × | × | × | × | × | × | × | × | × | × | | | |
| Φ12.70 | | | × | × | × | × | × | × | × | × | × | × | | | |
| Φ14.30 | | | | | | | | × | × | × | × | × | | | |
| Φ15.88 | | | | | | | × | × | × | × | × | | | | |
| Φ19.05 | | | | | | × | × | × | × | × | × | × | × | × | |
| Φ25.40 | | | | | | × | × | × | × | × | × | × | × | × | × |
| Φ31.75 | | | | | | × | × | × | × | × | × | × | × | × | × |
| Machinable Materials |
| EN | TP | UNS | | STANDARD |
| 1.4301 | TP304 | S30400 | | EN 10217/7TC1&TC2 |
| 1.4306 | TP304L | | | EN 10296-2 |
| 1.4307 | TP304L | S30403 | | EN10357 |
| 1.4311 | TP304LN | S30453 | | DIN11850 |
| 1.4404 | TP316 | S31600 | | AD2000W2-W4-W10 |
| 1.4404 | TP316L | S31603 | | ASTM/ASME A/SA249 |
| 1.4406 | TP316LN | S31653 | | ASTM A269 |
| 1.4432 | TP316L | | | ASTM A270 |
| 1.4435 | TP316L | | | ASTM A554 |
| 1.4436 | TP316 | | | ASTM A632 |
| 1.4438 | TP317L | S31703 | | ASTM A778 |
| 1.4439 | TP317LNM | S31726 | | ASTM/ASME B/SB674 |
| | TP317 | S31700 | | ASTM/ASME A/SA312 |
| 1.4449 | TP317 | | | ASTM/ASME A/SA688 |
| 1.455 | TP347 | S34700 | | ASTM/ASME B/SB676 |
| 1.4541 | TP321 | S32100 | | |
| 1.4571 | TP316TI | S31653 | | |
| 1.4828 | TP309 | | | |
| 1.4833 | TP309S | S30908 | | |
| 1.4845 | TP310S | S31008 | | |
| 1.4878 | TP321H | S32109 | | |
| 1.4948 | TP304H | S30409 | | |
| 1.4835 | 253MA | S30815 | | |
| | ALLOY840 | S33400 | | |
| Ferritic Steel |
| EN | TP | UNS | | STANDARD |
| 1.4016 | TP430 | S43000 | | ASTM/ASME A/SA268 |
| 1.4509 | TP441 | | | ASTM/ASME A/SA249 |
| 1.4512 | TP409 | | | EN10357 |
| 1.4521 | TP444 | | | ASTM A/SA803 |
| | TP439M | S43932 | | EN 10296-2 |
| 1.451 | TP439M | | | ASTM A554 |
| 1.452 | TP430Ti | | | |
| | TP439 | S43035 | | |
| | TP410S | S41008 | | |
| 2.4630 | | GH3030 | | |
| Duplex Steel |
| EN | TP | UNS | GRADE | STANDARD |
| 1.4362 | | S32304 | DSS 2304 | EN 10217/7 TC1&TC2 |
| 1.4162 | | S32101 | DSS 2101 | ASTM/ASME/SA789 |
| | | S32003 | DSS 2003 | EN10357 |
| 1.441 | | S32750 | DSS 2507 | AD 2000 W2 |
| 1.4501 | | S32760 | | EN 10296-2 |
| | | S82031 | | ASTM A554 |
| 1.4462 | | S31803 | DSS 2205 | ASTM/ASME A/SA790 |
| 1.4462 | | S32205 | DSS 2205 | |
| 1.4481 | | S31260 | | |
| 1.4424 | | S31500 | | |
| 1.4466 | | S31050 | | |
| SUPERAUSTENITIC STEEL |
| EN | TP | UNS | GRADE | STANDARD |
| 1.4529 | | N08926 | 1925HMO | EN10296-2 |
| | | N08367 | | ASTM/ASME/SA249 |
| 1.4562 | | N08031 | ALLOY 31 | ASTM A269 |
| 1.4539 | | N08904 | 904L | ASTM A270 |
| 1.4547 | | S31254 | 254SMO | ASTM/ASME A/SA312 |
| | | | | ASTM/ASME B/SB676 |
| | | | | AD 2000 W2 |
| | | | | ASTM A632 |
| | | | | ASTM/ASME B/SB674 |
| | | | | ASTM/ASME A/SA688 |
| | | | | ASTM/ASME B/SB674 |
| | | | | ASTM/ASME A/SA468 |
| NICKEL ALLOYS |
| EN | TP | UNS | GRADE | STANDARD |
| 2.4602 | | N06022 | ALLOY 22 | ASTM/ASME B/SB515 |
| 2.4605 | | N06059 | ALLOY 59 | ASTM/ASME B/SB516 |
| 2.466 | | N08020 | ALLOY 20 | ASTM/ASME B/SB626 |
| 2.4633 | | N06025 | ALLOY 25 | ASTM/ASME B/SB704 |
| 1.4563 | | N08028 | ALLOY 28 | ASTM B/SB751 |
| 1.4876 | | N08800 | ALLOY 800 | ASTM/ASME B/SB730 |
| 2.4858 | | N08825 | ALLOY 825 | ASTM/ASME B/SB468 |
| 2.436 | | N04400 | ALLOY 400 | AD 2000 W2 |
| 2.4816 | | N06600 | ALLOY 600 | EN 10217/7 TC1&TC2 |
| 2.4851 | | N06601 | ALLOY 601 | |
| 2.47 | | N06058 | ALLOY 2120 | |
| 2.4675 | | N06200 | ALLOY C2000 | |
| 2.4068 | | N02201 | ALLOY 201 | |
| 2.4733 | | N06230 | ALLOY 230 | |
| 2.4819 | | N10276 | C-276 | |
| 2.4856 | | N06625 | ALLOY 625 | |
| 1.4959 | | N08811 | INCOLOY 800HT | |
| 2.4060 | | N02200 | NICKEL 200 | |
| 2.4600 | | N10675 | Hastelloy B-3 | |
| 2.4617 | | N10665 | Hastelloy B-2 | |
Company Profile
FAQ
Q1: Are you a trading company or manufacturer?
We are a processing type company specializing in processing stainless steel for 304/304L large diameter thick wall stainless steel welded pipe and other materials. Prompt delivery, low price, high quality, unique insight into various materials of stainless steel, rolled round, straight seam, ring seam.
Q2: What are the company's main products?
304/304L stainless steel welded pipe processing, Thick-walled stainless steel welded pipe processing, Large diameter stainless steel welded pipe processing, Customizable stainless steel shrimp elbow, etc.
Q3:What are the advantages of your company?
We have many professionals, technical personnel, more competitive prices, and better after-sales service than other stainless steel companies.
Q4: What do you do to control product quality?
Before loading into the container, all products will go through a pre-shipment inspection by our professional QC group. UT test is called is applied to steel material, according to Sep 1921 C/c, D/d, or E/e level based on different types of steel.
Q5:What is your MOQ?
Our MOQ for each order is around 25 Tons(one container), customers can mix different types of steel to reach this quantity.
Q6: Can we visit your company and factory?
Yes, warmly welcome! We can book the hotel for you before you come to China and arrange for our driver to our airport to pick you up when you come
Address:
718 Meiyuan Street, Jiangyin, Wuxi, Jiangsu, China
Business Type:
Manufacturer/Factory
Business Range:
Health & Medicine, Industrial Equipment & Components, Instruments & Meters, Manufacturing & Processing Machinery, Metallurgy, Mineral & Energy
Management System Certification:
ISO 9001
Company Introduction:
Jiangyin Longyu - stock stainless steel pipe large processing plant 10 years of experience in customizing stainless steel materials We are a processing type company specializing in processing stainless steel for 304/304L large diameter thick wall stainless steel welded pipe and other materials. Prompt delivery, low price, high quality, unique insight into various materials of stainless steel, rolled round, straight seam, ring seam.
Jiangyin Longhe Alloy Pipe Technology Co., Ltd. is a manufacturer specializing in the production of special alloy precision clean and bright seamless pipes. The main products are stainless steel high-precision clean seamless pipes, providing pharmaceutical grade BA/EP pipes, electronic and semiconductor grade BA pipes, high-pressure stainless steel pipes, capillary tubes, alloy steel pipes, alloy precision clean seamless pipes, nickel-based alloy pipes, etc. The company strictly organizes the research and development, production, control and sales of stainless steel seamless pipes in accordance with ASTM A269/ASTM A270/ASME-BPE/EN10216-5/EN10305-1/ISO 1127 standards. The main materials are: Nickel-based alloy tubes, Hastelloy tubes, high-temperature alloy tubes, duplex steel series, and other special materials. Products are widely used in petroleum, chemical industry, aerospace, aviation, nuclear power plants, boiler heat exchangers, pharmaceuticals, food, papermaking, chemical fiber, construction and other fields. "Quality is the guarantee, science is the basis for development", "Customer needs are the company′s top priority Pursuing", we pursue "first-class products", "first-class reputation" and "first-class service". Our company is willing to establish honest cooperative relationships with friends from all walks of life for mutual benefit and common development.
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