304L Stainless Square Pipe
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We offer a wide selection of 304L Stainless Square Pipe, and a diverse range of finish options to meet the performance and appearance requirements for most applications.Stainless Steel Pipe Stockist in Usa, Canada,UK, Uae,South Korea, Iran,Saudi Arabia, Malaysia, Italy, Singapore, Indonesia, Thailand, Germany,Australia, Turkey, Taiwan, Mexico, Vietnam, Spain, Netherlands, France, Poland, Brazil, Philippines, Japan, Kuwait, India, Philippines, United States,Usa,UK, Pakistan, Saudi Arabia(Ksa), United Arab Emirates(Uae), Indonesia, Sri Lanka, Iran, Hong Kong, Nigeria, Poland, Netherlands, Bahrain, Bangladesh, Belgium, Oman, Malaysia, Kuwait, Qatar, Canada, Argentina, Singapore, Japan, Thailand, Bahrain, Chennai, Gujarat, Mumbai, Turkey, Italy, South Korea | Depot & around the globe.
| Pipe/Tube/Tubing Type | NB Sizes | Sch 5 | Sch 10 | Sch 40 | Sch 80 | Sch 160 |
|---|---|---|---|---|---|---|
| 304L Stainless Square Pipe | 1/8″ |  | | | | |
| 304L Stainless Square Pipe | 1/4″ | | | | | |
| 304L Stainless Square Pipe | 3/8″ | | | | | |
| 304L Stainless Square Pipe | 1/2″ | | | | | |
| 304L Stainless Square Pipe | 3/4″ | | | | | |
| 304L Stainless Square Pipe | 1″ | | | | | |
| 304L Stainless Square Pipe | 1 1/4″ | | | | | |
| 304L Stainless Square Pipe | 1 1/2″ | | | | | |
| 304L Stainless Square Pipe | 2″ | | | | | |
| 304L Stainless Square Pipe | 2 1/2″ | | | | | |
| 304L Stainless Square Pipe | 3″ | | | | | |
| 304L Stainless Square Pipe | 4″ | | | | | |
| 304L Stainless Square Pipe | 5″ | | | | | |
| 304L Stainless Square Pipe | 6″ | | | | |
ASTM Standards: ASTM A312, ASTM A213, ASTM A269, ASTM A376
European Standards: DIN 17456, DIN 17458, EN 10216, EN 10297
Japanese Standards: JIS G 3459, JIS GS3463, GS3467, JIS G3448
Russian Standards: GOST 9940, GOST 9941
We firstly possess a perfectly developed transport by which we can deliver goods directly from the warehouse to the customer. Secondly, we direct traffic, which ensures a delivery from the factory to customers from 15 tons. 304L Stainless Square Pipe that are not in stock at our own warehouse are based on the star traffic from other sites - every day! We aim at providing professional customer service with one-stop purchasing, along with superior quality control, competitive price, fast lead time and convenient transportation.
While marking we choose a specific item number as well different color shade to differentiate steel grades. We mark 304L Stainless Square Pipe as needed with the most suitable & visible marking technique.
We deliver from stock and warehousing as well as directly from the mill.
Packaging is an integral part of the product. It guarantees that the 304L Stainless Square Pipe is delivered to the customer in the required quality. For smaller orders the size of the 304L Stainless Square Pipe bundle depends on the no. of Tubes ordered, for larger orders the tubes are packed into individual bundles and in such a way that the maximum weight of 4000kg per bundle is not excedded. Bundle tied down with steel tape. Bundle tied down by steel strap underlaid by tapaten.
We can also provide 304L Stainless Square Pipe wooden box packing, cardboard boxes, plastic wrapping, using hardened paper with PE meshing (used as protection against mechanical damages of tubes), into tapaten and polyethylene sheet etc.
ISO 9001:2008 Certified company
Background 304L Stainless Steel
Grade 304L, the low carbon version of 304, does not require post-weld annealing and so is extensively used in heavy gauge components (over about 6mm). Grade 304H with its higher carbon content finds application at elevated temperatures. The austenitic structure also gives these grades excellent toughness, even down to cryogenic temperatures.
304L Stainless Steel Pipes and Tubes Composition
Typical compositional ranges for grade 304 stainless steels are given in table 1.
Table 1. Composition ranges for 304 grade stainless steel
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
|---|---|---|---|---|---|---|---|---|---|---|
| 304 | min. max. | - 0.08 | - 2.0 | - 0.75 | - 0.045 | - 0.030 | 18.0 20.0 | - | 8.0 10.5 | - 0.10 |
| 304L | min. max. | - 0.030 | - 2.0 | - 0.75 | - 0.045 | - 0.030 | 18.0 20.0 | - | 8.0 12.0 | - 0.10 |
| 304H | min. max. | 0.04 0.10 | - 2.0 | - 0.75 | -0.045 | - 0.030 | 18.0 20.0 | - | 8.0 10.5 | - |
304L Stainless Steel Pipes and Tubes Mechanical Properties
Typical mechanical properties for grade 304 stainless steels are given in table 2.
Table 2. Mechanical properties of 304 grade stainless steel
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
|---|---|---|---|---|---|
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 304 | 515 | 205 | 40 | 92 | 201 |
| 304L | 485 | 170 | 40 | 92 | 201 |
| 304H | 515 | 205 | 40 | 92 | 201 |
| 304H also has a requirement for a grain size of ASTM No 7 or coarser. | |||||
| Grade | Density (kg/m3) | Elastic Modulus (GPa) | Mean Coefficient of Thermal Expansion (m/m/0C) | Thermal Conductivity (W/m.K) | Specific Heat 0-1000C (J/kg.K) | Electrical Resistivity (n.m) | |||
|---|---|---|---|---|---|---|---|---|---|
| 0-1000C | 0-3150C | 0-5380C | at 1000C | at 5000C | |||||
| 304/L/H | 8000 | 193 | 17.2 | 17.8 | 18.4 | 16.2 | 21.5 | 500 | 720 |
304L Stainless Steel Pipes and Tubes Grade Specification Comparison
Approximate grade comparisons for 304 stainless steels are given in table 4.
Table 4. Grade specifications for 304 grade stainless steel
| Grade | UNS No | Old British | Euronorm | Swedish SS | Japanese JIS | ||
|---|---|---|---|---|---|---|---|
| BS | En | No | Name | ||||
| 304 | S30400 | 304S31 | 58E | 1.4301 | X5CrNi18-10 | 2332 | SUS 304 |
| 304L | S30403 | 304S11 | - | 1.4306 | X2CrNi19-11 | 2352 | SUS 304L |
| 304H | S30409 | 304S51 | - | 1.4948 | X6CrNi18-11 | - | - |
| These comparisons are approximate only. The list is intended as a comparison of functionally similar materials not as a schedule of contractual equivalents. If exact equivalents are needed original specifications must be consulted. | |||||||
304L Stainless Steel Pipes and Tubes Corrosion Resistance
Excellent in a wide range of atmospheric environments and many corrosive media. Subject to pitting and crevice corrosion in warm chloride environments, and to stress corrosion cracking above about 600C. Considered resistant to potable water with up to about 200mg/L chlorides at ambient temperatures, reducing to about 150mg/L at 600C.
304L Stainless Steel Pipes and Tubes Heat Treatment
Solution Treatment (Annealing) - Heat to 1010-11200C and cool rapidly. These grades cannot be hardened by thermal treatment.
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Formula for Good Business
Quality 304L Stainless Square Pipe + Prompt Service + Better Rates = Customers’ Satisfaction
Reliant Pipe & Tubes BHEL,ONGC, Saudi Aramco, NIOC Approved one of the oldest dealer & supplier of stainless Steel pipes Astm312/A358/A778,ASME B36.19M.Stainless steel pipes are used in constructions, food industry, pharmaceutical industry, petrochemical industry, automotive industry, municipal and decorative purposes. All Astm312/A358/A778,ASME B36.19M are individually covered so that the premium quality of materials is retained and there are no damges in the last stages of production.
Astm 312/A358/A778, ASME B36.19M.We manufacture Stainless Steel Pipes & Tubes for usage and application in different industries. These pipes and tubes are rigidly designed by using the graded stainless steel and advanced tools. This range of pipes & tubes can be accessed in various designs, lengths, diameters and finishes. Our product lines are widely acknowledged for their salient attributes like high tolerance, durable stability, rust resistance, fine finish and long working life. These products are ideal for various projects in industries such as aero-space, food & dairy, paper industry, chemical and power plants.
Port: JNPT PORT, MUMBAI (INDIA)
Payment Terms: L/C, T/T, Western Union
GRADE：TP304/304L, TP316/316L
STANDARD：ASTM A312/A358/A778, ASME B36.19M
O.D.：1/4″~80″
W.T.：SCH-5S, SCH-10S, SCH-40S
WELDING METHOD：TIG or TIG + Plasma or Laser
APPLICATION：Chemical & Petrochemical use etc.
PACKING：Sea Worthy Bundle or Steel Crate
All Astm312/A358/A778,ASME B36.19M are individually covered so that the premium quality of materials is retained and there are no damges in the last stages of production. We also ensure that we deliver our orders promplty and that the quality remains intact.
All Astm312/A358/A778,ASME B36.19M have imprints on them to highlight the specification of the pipes.
| NOMINAL DIAMETER NPS | OUTSIDE DIAMETER(MM) | SCH-5S WALL THICKNESS(MM) | SCH-10S WALL THICKNESS(MM) | SSCH-40S WALL THICKNESS(MM) |
|---|---|---|---|---|
| 1/4 | 13.72 | 1.65 | 2.24 | |
| 3/8 | 17.15 | 1.65 | 2.31 | |
| 1/2 | 21.34 | 1.65 | 2.11 | 2.77 |
| 3/4 | 26.67 | 1.65 | 2.11 | 2.87 |
| 1 | 33.40 | 1.65 | 2.77 | 3.38 |
| 1 1/4 | 42.16 | 1.65 | 2.77 | 3.56 |
| 1 1/2 | 48.26 | 1.65 | 2.77 | 3.68 |
| 2 | 60.33 | 1.65 | 2.77 | 3.91 |
| 2 1/2 | 73.03 | 2.11 | 3.05 | 5.16 |
| 3 | 88.90 | 2.11 | 3.05 | 5.49 |
| 3 1/2 | 101.60 | 2.11 | 3.05 | 5.74 |
| 4 | 114.30 | 2.11 | 3.05 | 6.02 |
| 5 | 141.30 | 2.77 | 3.40 | 6.55 |
| 6 | 168.28 | 2.77 | 3.40 | 7.11 |
| 8 | 219.08 | 2.77 | 3.76 | 8.18 |
| 10 | 273.05 | 3.40 | 4.19 | 9.27 |
| 12 | 323.85 | 3.96 | 4.57 | 9.53 |
| 14 | 355.60 | 3.96 | 4.78 | 9.53 |
| 16 | 406.40 | 4.19 | 4.78 | 9.53 |
| 18 | 457.20 | 4.19 | 4.78 | 9.53 |
| 20 | 508.00 | 4.78 | 5.54 | 9.53 |
| 22 | 558.80 | 4.78 | 5.54 | |
| 24 | 609.60 | 5.54 | 6.35 | 9.53 |
| 30 | 762.00 | 6.35 | 7.92 | |
| 32 | 80 | 812.8 | 2032.0 | (Thickness)：6.35~30mm Nominal diameter and wall thickness subject to the approval of vendor and purchaser | ||
ASME B36.19 Pipe Size Chart – pipes weight in kg/meter by pipe NPS and schedule
| NPS | OD | Schedule | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 5S | 10S | 40S | 80S | ||||||||||
| (mm) | (inch) | WT / WEIGHT | |||||||||||
| mm (in) | kg/m | mm (in) | kg/m | mm (in) | kg/m | mm (in) | kg/m | ||||||
| 1/8 | 10.3 | 0.405 | – | – | 1.25 (0.049) | 0.28 | 1.73 (0.068) | 0.37 | 2.42 (0.095) | 0.47 | |||
| 1/4 | 13.7 | 0.540 | – | – | 1.66 (0.065) | 0.49 | 2.24 (0.088) | 0.63 | 3.03 (0.119) | 0.80 | |||
| 3/8 | 17.2 | 0.675 | – | – | 1.66 (0.065) | 0.63 | 2.32 (0.091) | 0.85 | 3.20 (0.126) | 1.10 | |||
| 1/2 | 21.3 | 0.840 | 1.65 (0.065) | 0.81 | 2.11 (0.083) | 1.00 | 2.77 (0.109) | 1.27 | 3.74 (0.147) | 1.62 | |||
| 3/4 | 26.7 | 1.050 | 1.65 (0.065) | 1.02 | 2.11 (0.083) | 1.28 | 2.87 (0.113) | 1.68 | 3.92 (0.154) | 2.20 | |||
| 1 | 33.4 | 1.315 | 1.65 (0.065) | 1.30 | 2.77 (0.109) | 2.09 | 3.38 (0.133) | 2.50 | 4.55(0.179) | 3.24 | |||
| 1 1/4 | 42.2 | 1.660 | 1.65 (0.065) | 1.66 | 2.77 (0.109) | 2.69 | 3.56 (0.140) | 3.39 | 4.86 (0.191) | 4.47 | |||
| 1 1/2 | 48.3 | 1.900 | 1.65 (0.065) | 1.91 | 2.77 (0.109) | 3.11 | 3.69 (0.145) | 4.06 | 5.08 (0.200) | 5.41 | |||
| 2 | 60.3 | 2.375 | 1.65 (0.065) | 2.40 | 2.77 (0.109) | 3.93 | 3.92 (0.154) | 5.45 | 5.54 (0.218) | 7.49 | |||
| 2 1/2 | 73.0 | 2.875 | 2.11 (0.083) | 3.69 | 3.05 (0.120) | 5.26 | 5.16 (0.203) | 8.64 | 7.01 (0.276) | 11.4 | |||
| 3 | 88.9 | 3.500 | 2.11 (0.083) | 4.52 | 3.05 (0.120) | 6.46 | 5.49 (0.216) | 11.3 | 7.62 (0.300) | 15.3 | |||
| 3 1/2 | 101.6 | 4.000 | 2.11 (0.083) | 5.18 | 3.05 (0.120) | 7.41 | 5.74 (0.226) | 13.6 | 8.08 (0.318) | 18.6 | |||
| 4 | 114.3 | 4.500 | 2.11 (0.083) | 5.84 | 3.05 (0.120) | 8.37 | 6.02 (0.237) | 16.1 | 8.56 (0.337) | 22.3 | |||
| 5 | 141.3 | 5.563 | 2.77 (0.109) | 9.46 | 3.41 (0.134) | 11.6 | 6.56 (0.258) | 21.8 | 9.53 (0.375) | 31.0 | |||
| 6 | 168.3 | 6.625 | 2.77 (0.109) | 11.3 | 3.41 (0.134) | 13.9 | 7.12 (0.280) | 28.3 | 10.9 (0.432) | 42.6 | |||
| 8 | 219.1 | 8.625 | 2.77 (0.109) | 14.8 | 3.76 (0.148) | 20.0 | 8.18 (0.322) | 42.5 | 12.7 (0.500) | 64.6 | |||
| 10 | 273.1 | 10.750 | 3.41 (0.134) | 22.7 | 4.20 (0.165) | 27.8 | 9.28 (0.365) | 60.4 | 12.7 (0.500) | 81.5 | |||
| 12 | 323.9 | 12.750 | 3.97 (0.156) | 31.3 | 4.58 (0.180) | 36.1 | 9.53 (0.375) | 73.9 | 12.7 (0.500) | 97.4 | |||
| Allowed Outside Diameter Tolerance | ||||
|---|---|---|---|---|
| Over | Under | |||
| inches | mm | inches | mm | |
| NPS 1/8 to 1½ DN 6 to 40 OD 10.3 to 48.3, mm | 1/64 | 0.4 | 1/64 | 0.4 |
| Over 1½ to 4 DN 40 to 100 OD 48.3 to 114.3, mm | 1/32 | 0.8 | 1/32 | 0.8 |
| Over 4 to 8 DN 100 to 200 OD 114.3 to 219.1, mm | 1/16 | 1.6 | 1/32 | 0.8 |
| Over 8 to 18 DN 200 to 450 OD 219.1 to 457, mm | 3/32 | 2.4 | 1/32 | 0.8 |
| Over 18 to 26 DN 450 to 650 OD 457 to 660, mm | 1/8 | 3.2 | 1/32 | 0.8 |
| Tolerance, % from Nominal | ||
|---|---|---|
| Over | Under | |
| NPS 1/8 to 2½, incl, all t/D ratios DN 6 to 65 OD 10.3 to 73.0, mm | 20.0 | 12.5 |
| NPS 3 to 18, incl, t/D up to 5% DN 80 to 450 OD 88.9 to 457, mm | 22.5 | 12.5 |
| NPS 3 to 18, incl, t/D > 5% DN 80 to 450 OD 88.9 to 457, mm | 15.0 | 12.5 |
| NPS 20 and larger, incl, welded, all t/D ratios DN 500 OD 508, mm | 17.5 | 12.5 |
| NPS 20 and larger, incl, seamless, t/D up to 5% DN 500 OD 508, mm | 22.5 | 12.5 |
| NPS 20 and larger, incl, seamless, t/D > 5% DN 500 OD 508, mm | 15.0 | 12. |
Should be within -10% to +10% tolerance, as a rule of thumb (-3/+3% should be acceptable).
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