304 Welded Austenitic Piping Seamless Tube Food Grade Stainless Steel For Heat Exchanger Tube UNS S34709
Specifications
347H is controlled, high carbon Nb stabilised stainless steel for elevated temperature service.
General Introduction
S347H is a austenitic chromium steel containing colubium. It is recommended for parts fabricated by welding which cannot be subsequently annealed. This type is also used for parts which are intermittently heated and cooled to temperatures between 800°F and 1600°F. The addition of columbium produces a stabilied type of stainless that eliminates carbide precipitation and, consequently, intergranular corrosion.
Chemical Composition
C | Co | Cr | Mn | Ni | P | S | Si | Ta |
Max | | | Max | | Max | Max | Max | |
0.08 | Trace* | 17.0-20.0 | 2.0 | 9.0-13.0 | 0.04 | 0.30 | 0.75 | Trace* |
MAIN STEEL TYPE AND GRADE :
PRODUCTS | TYPICAL STEEL GRADE |
Austenitic | TP304,TP304L,TP304H,TP316,TP316L,TP316H,TP316Ti
TP321,TP321H,TP347H,904L,TP310H,TP310S,TP317,TP317L |
Duplex / Super Duplex | S31803, S32205, S32750 |
MAIN PRODUCTION STANDARDS:
STANDARD TYPE | STANDARD |
EN | EN10216-5 , EN10216-2 |
DIN | DIN 17456 , DIN 17458 |
ASTM | ASTM A312, A213, A269, A511, A789, A790 ETC |
GOST | GOST 9941 , GOST 5632 |
JIS | JIS G3459 , JIS G3463 |
GB | GB/T14975,GB/T14975, GB13296, GB5310, GB9948 |
Designed Features
• Superior general corrosion resistance over Type 321 due to stabilization with columbium.
• Reduced tendencies to form continuous networks of chromium carbides at the grain boundaries.
• Better high temperature properties than 304 or 304L. Generally used for parts which are intermittently heated up to 1500 deg. F. For continuous service the maximum temperature is 1650 deg. F.
• Type 347H has high carbon (.04 - . 10) for better high temperature creep properties. • Improved intergranular corrosion resistance.
OUR TOBO GROUP
The ety in production, quality first.
Specialized production workshop, professional production staff.
Shop the '7 s' principle
The standardized production, the comprehensive treatment
TOBO GROUP:
Make development by enlarging scale brand building and internationalization.
Keep Challenging and Innovation.
Advance manufacturing instruments.
Create perfect quality.
Take strict testing as guarantee, upgrade grade as object.
Typial Application
***High temperature chemical process, heat exchanger tubes
***Refineries
***High temperature steam service
FAQ
1.Q: Are you manufacture or trade company?
A:We are manufacture specialized in PVC pipes and rubber hoses ; Our produces have CE and ISO certification.
2.Q: How can I get the samples?
A:If you need some samples to test, we can make as per your request .You should pay for the transportation freight of samples and our samples cost, while the samples cost can be refundable after you place the order if the amount meets our requirement.
3.Q:How much the transportation freight of samples?
A:The freight depends on the weight and packing size and your area.
4.Q:How long can I expect to get the sample?
A:The samples will be ready for delivery within one week. The samples will be sent via express and arrive in 4-7 days.
5.Q:Can we have our Logo or company name to be printed on your products or package?
A:Sure.Your Logo can be put on your products by Hot Stamping,Printing,Embossing,UV Coating,Silk-screen Printing or Sticker.
6.Q:How to order?
A: Please send us your purchase order by Email or you can ask us to send you a proforma invoice for your order. We need to know the following information for your order:
1) Product information-Quantity, Specification (Size, Material, Technological and Packing requirements etc.)
2) Delivery time required.
3) Shipping information-Company name, Street address, Phone &Fax number, Destination sea port.
4) Forwarder's contact details if there's any in China.
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304 Welded Austenitic Piping Seamless Tube Food Grade Stainless Steel For Heat Exchanger Tube UNS S34709 Images
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