ZHANGJIAGANG HUA DONG ENERGY TECHNOLOGY CO.,LTD
Zhangjiagang Hua Dong Energy Technology Co., Ltd.
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ASME U Seamless Carbon Steel Boiler Tube St 37.8 Carbon Steel Pipe
Production Standard: GB/T20409-2006
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.
SteelGrade:20G,20MNG,25MNG,12CRMOG,15CRMOG,SA210A1,SA210C,SA213T2/T12,WB36,T91,T11,
P11,P22,P92,P5,P9,R102,CR5MO,16MO3,12CR2MOWVTIB
Threads Number:4ribs/6ribs/8ribs/12ribs
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 |
| Tube Sizes for Heat Exchangers & Condensers & Boiler | |||||||||||
| Outside Diameter | BWG | ||||||||||
| 25 | 22 | 20 | 18 | 16 | 14 | 12 | 10 | ||||
| Wall Thickness mm | |||||||||||
| 0.508 | 0.71 | 0.89 | 1.24 | 1.65 | 2.11 | 2.77 | 3.40 | ||||
| mm | inch | Weight kg/m | |||||||||
| 6.35 | 1/4 | 0.081 | 0.109 | 0.133 | 0.174 | 0.212 | |||||
| 9.53 | 3/8 | 0.126 | 0.157 | 0.193 | 0.257 | 0.356 | 0.429 | ||||
| 12.7 | 1/2 | 0.214 | 0.263 | 0.356 | 0.457 | 0.612 | 0.754 | ||||
| 15.88 | 5/8 | 0.271 | 0.334 | 0.455 | 0.588 | 0.796 | 0.995 | ||||
| 19.05 | 3/4 | 0.327 | 0.405 | 0.553 | 0.729 | 0.895 | 1.236 | ||||
| 25.4 | 1 | 0.44 | 0.546 | 0.75 | 0.981 | 1.234 | 1.574 | 2.05 | |||
| 31.75 | 1 1/4 | 0.554 | 0.688 | 0.947 | 1.244 | 1.574 | 2.014 | 2.641 | |||
| 38.1 | 1 1/2 | 0.667 | 0.832 | 1.144 | 1.514 | 1.904 | 2.454 | 3.233 | |||
| 44.5 | 1 3/4 | 1.342 | 1.774 | 2.244 | 2.894 | 3.5 | |||||
| 50.8 | 2 | 1.549 | 2.034 | 2.574 | 3.334 | 4.03 | |||||
| 63.5 | 2 1/2 | 1.949 | 2.554 | 3.244 | 4.214 | 5.13 | |||||
| 76.2 | 3 | 2.345 | 3.084 | 3.914 | 5.094 | 6.19 | |||||
| 88.9 | 3 1/2 | 2.729 | 3.609 | 4.584 | 5.974 | 7.27 | |||||
| 101.6 | 4 | 4.134 | 5.254 | 6.854 | 8.35 | ||||||
| 114.3 | 4 1/2 | 4.654 | 5.924 | 7.734 | 9.43 | ||||||
| Form of Tube: Straight & U-bend & Finned & Coiled | |||||||||||
| Stainless Steel Tube: A/SA213, A/SA249, A/SA268, A/SA269, A/SA789, EN10216-5, A/SA688, B/SB163, JIS-G3463, GOST9941-81. | |||||||||||
| Carbon &Alloy Steel Tube: A/SA178, A/SA179, A/SA192,A/SA209, A/SA210, A/SA213, A.SA214 | |||||||||||
Certification