Density: 7.98 g/cm³
Outer diameter: 6.35 to 1219mm,1/4"-48"
Wall Thickness: 0.1 to 60mm,sch5s-sch160
Length: 1-12m
Equivalent designations: Alloy 317, UNS S31700,DIN 1.4449;
Alloy EN 1.4438, UNS S31703, AISI 317L, X2CrNiMo18-15-4;
Surface: black,pickling,hairline,180 and 240 grits,6K,8K.
Packing: Woven bag,wooden box or as required
317 stainless steel pipe has good pitting resistance and can be used as dyeing equipment materials.
317 stainless steel tube heat treatment: solution treatment (°C) 1010-1150 fast cooling
Mechanical properties of 317 stainless steel tube after solution treatment (GB/T4237-92)
Yield strength ≥ 205 / MPa, tensile strength ≥ 515 / MPa, elongation ≥ 35%
317L alloy is a low carbon austenitic stainless steel containing molybdenum. It adds chromium, nickel and molybdenum to improve corrosion resistance and enhance chemical attack on sulfur, acetic acid, formic acid, citric acid and tartaric acid. Due to its low carbon content, the 317L also provides resistance to sensitization during soldering and higher creep, stress cracking and tensile strength at elevated temperatures. It is non-magnetic in the annealed state.
Performance characteristics:
The corrosion resistance of 317 is similar to that of 316. The high molybdenum content ensures that it is more resistant to overall and local corrosion in most media, such as sulfuric acid, acid chlorine and phosphoric acid. However, in strong oxidizing acids such as nitric acid, 317 is susceptible to corrosion.
The performance of the 317L is basically the same as 317. Due to the lower carbon content, the welding performance of 317L and the intergranular corrosion resistance at high temperature (427~816 °C) are better than 317.
317/317L seamless pipe standard:
ASTM A213 (ASME SA213), ASTM A249 (ASME SA249),ASTM A269 (ASME SA269),ASTM A312 (ASME SA312),ASTM A511 (ASME SA511),ASTM A554 (ASME SA554),JIS、BS、EN、DIN etc
Manufacturing process for 317/317L stainless steel seamless pipe：
Round tube billet → heating → perforation → head → annealing → pickling → oiling (copper plating) → multi-pass cold drawing (cold rolling) → blank tube → heat treatment → straightening → hydraulic test (inspection) → mark → in Library.
Chemical composition:
317 & 317L is usually used for:
Grade
UNS
Chemical Component %
C
Mn
P
S
Si
Ni
Cr
Mo
TP317
S31700
0.08
2.00
0.045
0.03
1.00
11.0-14.0
18.0-20.0
3.0-4.0
TP317L
S31703
0.035
2.00
0.045
0.03
1.00
11.0-15.0
18.0-20.0
3.0-4.0
Flue gas desulfurization systemChemical and petrochemical processing
Food and beverage industry
Petroleum refining
Condenser for generator equipment
Paper industry
Cargo packaging:
Test before shipping:
1. Measurement test
2. Chemical composition test
3. Ultrasonic test
4. Eddy current testing
