Product Name:Cold Drawn Seamless Rifled Pipe Heat Exchanger Tubes
Material Carbon steel,Alloy steel
Od: 21.3-762mm: Standard
DIN GB ISO JIS BA ANSI
Grade: 20G,20MnG,15CrMoG,SA210Gr.A1, SA210Gr.C, SA213T12, ASTM A335P11 P91,P22,16Mo3.......
Wall thickness: 2.77-25.4mm
Length: 5.8/6/11.8/12mtr as required or random length
Thread No.: 4ribs/6ribs/8ribs/12ribs......
Surface treatment: Black painting, oiled or galvanized
Payment term; 30% TT advance
Price term: Fob,Cif, Cnf,Cfr
Delivery time: As order qty
Internal Thread High pressure boiler Rifled tube is one kind of endophragm processes the spiral line the seamless steel pipe. Main application in on capacity utility boiler's water cooling wall. Usually with the fluorescent tube which uses compares, it can maintain the nuclear ebullition condition under the high fever load operating condition, thus avoids sending the filming condition ebullition, prevents the pipe to burn out, lengthens the pipe service life.
Chemical&Mechanical parameters
| Grade |
C |
Mn |
Si |
Cr |
Mo |
S |
P |
| 20G |
0.17~0.23 |
0.35~0.65 |
0.17~0.37 |
--- |
--- |
≤0.020 |
≤0.025 |
| 20MnG |
0.17~0.23 |
0.70~1.00 |
0.17~0.37 |
--- |
--- |
≤0.020 |
≤0.025 |
| 25MnG |
0.22~0.29 |
0.70~1.00 |
0.17~0.37 |
--- |
--- |
≤0.020 |
≤0.025 |
| 12CrMoG |
0.08~0.15 |
0.40~0.70 |
0.17~0.37 |
0.40~0.70 |
0.40~0.55 |
≤0.020 |
≤0.025 |
| 15CrMoG |
0.12~0.18 |
0.40~0.70 |
0.17~0.37 |
0.80~1.10 |
0.40~0.55 |
≤0.020 |
≤0.025 |
| SA-210A1 |
≤0.27 |
≤0.93 |
≥0.10 |
--- |
--- |
≤0.035 |
≤0.035 |
| SA-210C |
≤0.35 |
0.29~1.06 |
≥0.10 |
--- |
--- |
≤0.035 |
≤0.035 |
| SA-213T2 |
0.10~0.20 |
0.30~0.61 |
0.10~0.30 |
0.50~0.81 |
0.44~0.65 |
≤0.025 |
≤0.025 |
| SA-213T12 |
0.05~0.15 |
0.30~0.61 |
≤0.50 |
0.80~1.25 |
0.44~0.65 |
≤0.025 |
≤0.025 |
| Grade |
T(MPa) |
Y(MPa) |
E(%) |
Hardness |
| 20G |
410~550 |
245 |
≥24 |
--- |
| 20MnG |
≥415 |
≥240 |
≥22 |
--- |
| 25MnG |
≥485 |
≥275 |
≥20 |
--- |
| 12CrMoG |
410~560 |
≥205 |
≥21 |
--- |
| 15CrMoG |
440~640 |
≥235 |
≥21 |
--- |
| SA-210C |
≥415 |
≥255 |
≥30 |
≤143HBW |
| SA-210A1 |
≥485 |
≥275 |
≥30 |
≤179HBW |
| SA-213T2 |
≥415 |
≥205 |
≥30 |
≤163HBW |
| SA-213T12 |
≥415 |
≥220 |
≥30 |
≤163HBW |
