Stainless Steel 347 Rectangular Tubing
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We offer a wide selection of SS 347 Rectangular Tubing, 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 |
|---|---|---|---|---|---|---|
| SS 347 Rectangular Tubing | 1/8″ |  | | | | |
| SS 347 Rectangular Tubing | 1/4″ | | | | | |
| SS 347 Rectangular Tubing | 3/8″ | | | | | |
| SS 347 Rectangular Tubing | 1/2″ | | | | | |
| SS 347 Rectangular Tubing | 3/4″ | | | | | |
| SS 347 Rectangular Tubing | 1″ | | | | | |
| SS 347 Rectangular Tubing | 1 1/4″ | | | | | |
| SS 347 Rectangular Tubing | 1 1/2″ | | | | | |
| SS 347 Rectangular Tubing | 2″ | | | | | |
| SS 347 Rectangular Tubing | 2 1/2″ | | | | | |
| SS 347 Rectangular Tubing | 3″ | | | | | |
| SS 347 Rectangular Tubing | 4″ | | | | | |
| SS 347 Rectangular Tubing | 5″ | | | | | |
| SS 347 Rectangular Tubing | 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. SS 347 Rectangular Tubing 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 SS 347 Rectangular Tubing 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 SS 347 Rectangular Tubing is delivered to the customer in the required quality. For smaller orders the size of the SS 347 Rectangular Tubing 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 SS 347 Rectangular Tubing 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
High carbon versions of both alloys are available. These grades have UNS designations S32109 and S34709.
Chemical Composition of 347 Stainless Steel Pipes and Tubes
Represented by ASTM A240 and ASME SA-240 specifications.
| Element | 347 |
| Carbon* | 0.08 |
| Manganese | 2.00 |
| Phosphorus | 0.045 |
| Sulfur | 0.03 |
| Silicon | 0.75 |
| Chromium | 17.00-19.00 |
| Nickel | 9.00-13.00 |
| Columbium + Tantalum** | 10xC min to 1.00 max |
| Tantalum | -- |
| Titanium** | -- |
| Cobalt | -- |
| Nitrogen | -- |
| Iron | Balance |
Resistance to Corrosion of 347 Stainless Steel Pipes and Tubes
General Corrosion
Alloys 321 and 347 offer similar resistance to general, overall corrosion as the unstabilized chromium nickels Alloy 304. Heating for long periods of time in the chromium carbide precipitation range may affect the general resistance of Alloys 321 and 347 in severe corrosive media.
In most environments, both alloys will show similar corrosion resistance; however, Alloy 321 in the annealed condition is somewhat less resistant to general corrosion in strongly oxidizing environments than annealed Alloy 347. For this reason, Alloy 347 is preferable for aqueous and other low temperature environments. Exposure in the 8000F to 15000F (4270C to 8160C) temperature range lowers the overall corrosion resistance of Alloy 321 to a much greater extent than Alloy 347. Alloy 347 is used primarily in high temperature applications where high resistance to sensitization is essential, thereby preventing intergranular corrosion at lower temperatures.
Physical Properties of 347 Stainless Steel Pipes and Tubes
The physical properties of Types 321 and 347 are quite similar and, for all practical purposes, may be considered to be the same. The values given in the table may be used to apply to both steels.
When properly annealed, the Alloys 321 and 347 stainless steels consist principally of austenite and carbides of titanium or columbium. Small amounts of ferrite may or may not be present in the microstructure. Small amounts of sigma phase may form during long time exposure in the 10000F to 15000F (5930C to 8160C) temperature range.
The stabilized Alloys 321 and 347 stainless steels are not hardenable by heat treatment.
The overall heat transfer coefficient of metals is determined by factors in addition to thermal conductivity of the metal. In most cases, film coefficients, scaling, and surface conditions are such that not more than 10 to 15% more surface area is required for stainless steels than for other metals having higher thermal conductivity. The ability of stainless steels to maintain clean surfaces often allows better heat transfer than other metals having higher thermal conductivity.
Mechanical Properties of 347 Stainless Steel Pipes and Tubes
Room Temperature Tensile Properties
Minimum mechanical properties of the stabilized Alloys 321 and 347 chromium-nickel grades in the annealed condition (20000F [10930C], air cooled) are shown in the table.
Elevated Temperature Tensile Properties
Typical elevated temperature mechanical properties for Alloys 321 and 347 sheet / strip are shown below. Strength of these stabilized alloys is distinctly higher than that of non-stabilized 304 alloys at temperatures of 10000F (5380C) and above.
High carbon Alloys 321H and 347H (UNS32109 and S34700, respectively) have higher strength at temperatures above 10000F (5370C). ASME maximum allowable design stress data for Alloy 347H reflects the higher strength of this grade in comparison to the lower carbon Alloy 347 grade. The Alloy 321H is not permitted for Section VIII applications and is limited to 8000F (4270C) use temperatures for Section III code applications.
Heat Treatment of 347 Stainless Steel Pipes and Tubes
The annealing temperature range for Alloys 321 and 347 is 1800 to 20000F (928 to 10930C). While the primary purpose of annealing is to obtain softness and high ductility, these steels may also be stress relief annealed within the carbide precipitation range 800 to 15000F (427 to 8160C), without any danger of subsequent intergranular corrosion. Relieving strains by annealing for only a few hours in the 800 to 15000F (427 to 8160C) range will not cause any noticeable lowering in the general corrosion resistance, although prolonged heating within this range does tend to lower the general corrosion resistance to some extent. As emphasized, however, annealing in the 800 to 15000F (427 to 8160C) temperature range does not result in a susceptibility to intergranular attack.For maximum ductility, the higher annealing range of 1800 to 20000F (928 to 10930C) is recommended.
Benefits of 347 Stainless Steel
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ASME B36.19 Pipe Size Chart – pipes weight in kg/meter by pipe NPS and schedule
| NPS | OD | Schedule | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Schedule 5S | Schedule 10S | Schedule 40S | Schedule 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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