1)尺寸規格見表6-75。
| 壁厚mm外徑/mm | 1.2 | 1.5 | 2.0 | 2.2 | 2.5 | 2.8 | 3.0 | 3.2 | 3.5 | 4.0 | 4.5 | 5.0 | 5.5 | 6.0 | 6.5 | 7.0 | 7.5 | 8.0 | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 |
| 8.O | × | × | × | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 1O.O | × | × | × | × | × | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 12.O | × | × | × | × | × | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 14.0 | × | × | × | × | × | × | × | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 16.O | × | × | × | × | × | × | × | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 19.O | × | × | × | × | × | × | × | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 22.0 | × | X | × | × | × | × | × | × | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 25.O | × | × | × | × | × | × | × | × | × | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 27.0 | × | × | × | × | × | × | × | × | × | × | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 32.0 | × | × | × | × | × | × | × | × | × | × | × | - | - | - | - | - | - | - | - | - | - | - | - |
| 34.0 | - | × | × | × | × | × | × | × | × | × | × | × | - | - | - | - | - | - | - | - | - | - | - |
| 38.O | - | × | × | × | × | × | × | × | × | × | × | × | × | - | - | - | - | - | - | - | - | - | - |
| 42.O | - | - | × | × | × | × | × | × | × | × | × | × | × | × | - | - | - | - | - | - | - | - | - |
| 45.0 | - | - | × | × | × | × | × | × | × | × | × | × | × | × | × | - | - | - | - | - | - | - | - |
| 48.0 | - | - | × | × | × | × | × | × | × | × | × | × | × | × | × | × | - | - | - | - | - | - | - |
| 51.0 | - | - | × | × | × | × | × | × | × | × | × | × | × | × | × | × | - | - | - | - | - | - | - |
| 54.0 | - | - | × | × | X | × | × | × | × | × | × | × | × | × | × | × | × | × | × | - | - | - | - |
| 57.0 | - | - | X | × | × | × | × | × | × | × | × | × | × | × | × | X | × | × | × | - | - | - | - |
| 60.O | - | - | × | × | × | × | × | × | × | × | × | × | × | × | × | × | × | × | × | - | - | - | - |
| 63.O | - | - | - | - | - | - | × | × | × | × | × | × | × | × | × | × | × | × | × | - | - | - | - |
| 65.0 | - | - | - | - | - | - | × | × | × | × | × | × | × | × | × | × | × | × | × | - | - | - | - |
| 70.0 | - | - | - | - | - | - | × | × | × | × | × | × | × | × | × | × | × | × | × | - | - | - | - |
| 76.0 | - | - | - | - | - | - | - | - | - | × | × | × | × | × | × | × | × | × | × | × | × | × | × |
| 83.0 | - | - | - | - | - | - | - | - | - | × | × | × | × | × | × | × | × | × | × | × | × | × | × |
| 89.0 | - | - | - | - | - | - | - | - | - | × | × | × | × | × | × | × | × | × | × | X | × | × | × |
| 102.0 | - | - | - | - | - | - | - | - | - | - | × | × | × | × | × | × | × | × | × | × | × | × | - |
| 108.O | - | - | - | - | - | - | - | - | - | - | × | × | × | × | × | × | × | X | × | × | × | × | - |
| 114.O | - | - | - | - | - | - | - | - | - | - | × | × | × | × | × | × | × | × | × | × | × | × | × |
| 121.O | - | - | - | - | - | - | - | - | - | - | - | × | × | × | × | × | × | × | × | × | × | × | × |
| 127.0 | - | - | - | - | - | - | - | - | - | - | - | × | × | × | × | × | × | × | × | × | × | × | × |
| 133.0 | - | - | - | - | - | - | - | - | - | - | - | × | × | × | × | × | × | × | × | × | × | × | × |
| 140.0 | - | - | - | - | - | - | - | - | - | - | - | - | × | × | × | × | × | × | × | × | × | × | × |
| 146.O | - | - | - | - | - | - | - | - | - | - | - | - | - | × | × | × | × | × | × | × | × | × | X |
| 159.O | - | - | - | - | - | - | - | - | - | - | - | - | - | × | × | × | × | × | × | × | × | X | × |
注:表中的符號“×”表示有產品。
(2)尺寸偏差見表6-76。
表6-76鍋爐、熱交換器用不銹鋼無縫鋼管的尺寸允許偏差
(mm)
| 鋼管種類 | 鋼管尺寸 | 允許偏差 | 鋼管種類 | 鋼管尺寸 | 允許偏差 |
| 熱軋、熱擠壓管 | 外徑:≤140 >140 | ±1.25% 土1% | 冷拔(軋)管 | 外徑:8~30 >30~50 >50 | ±O.20 ±O.30 ±O.8% |
壁厚≤10 >10 | ±12.5% ±15% | 壁厚:1.O~3.0 >3.0 | +12% -lO ±10% |
注:1.冷拔(軋)熱交換器鋼管,在公差帶不變的情況下,以正公差交貨。
2.鋼管的通常長度規定如下:
熱軋(擠)鋼管………………………………………………………3~12m
冷拔(軋)鋼管………………………………………………………3~8m
水管鍋爐用鋼管通常長度為:
熱軋(擠)鋼管………………………………………………………4~12m
冷拔(軋)鋼管………………………………………………………4~8m
3.鋼管的彎曲度不得大于如下規定:
壁厚≤15mm…………………………………………………………1.5mm/m
壁厚>15mm …………………………………………………………2.Omm/m
(3)牌號和化學成分見表6-77。
表6-77鍋爐、熱交換器用不銹鋼無縫鋼管的牌號和化學成分
| 組織類型 | 序號 | 牌 號 | 化學成分(質量分數)(%) | ||||||||
| C | Si | Mn | - | - | Ni | Cr | M0 | 其 他 | |||
| ≤ | |||||||||||
| 奧氏體型 | 1 | 0Crl8Ni9 | O.07 | 1 | 2 | O.035 | O.030 | 8.00~11.00 | 17.00~19.00 | - | - |
| 2 | 1Crl9Ni9 | O.04~O.10 | 1 | 2.00 | O.035 | 0.03 | 8.00~11.00 | 18.00~20.00 | - | - | |
| 3 | 00Crl9Nil0 | O.030 | 1 | 2 | O.035 | 0.03 | 8.00~12.00 | 18.00~20.00 | - | - | |
| 4 | 2Cr23Nil3 | O.20 | 1.00 | 2 | O.035 | O.030 | 12.00~15.00 | 22.00~24.00 | - | - | |
| 5 | OCr23Nil3 | O.08 | 1 | 2 | O.035 | O.030 | 12.00~15.00 | 22.00~24.00 | - | - | |
| 6 | 2Cr25Ni20 | 0.25 | 1 | 2 | 0.035 | O.030 | 19.00~22.00 | 24.00~26.00 | - | - | |
| 7 | OCr25Ni20 | 0.08 | 1 | 2 | 0.035 | 0.03 | 19.00~22.00 | 24.00~26.00 | - | - | |
| 8 | 0Crl7Nil2M02 | O.08 | 1.00 | 2 | O.035 | O.030 | 10.00~14.00 | 16.00~18.50 | 2.00~3.00 | - | |
| 9 | lCrl7Nil2M02 | 0.04~O.10 | <O.75< DIV> | 2 | 0.03 | 0.03 | 11.00~14.00 | 16.00~18.00 | 2.00~3.00 | - | |
| 10 | 0Crl7Nil4M02 | O.030 | 1 | 2 | 0.035 | 0.03 | 12.00~15.00 | 16.00~18.00 | 2.00~3.00 | - | |
| 11 | OCrl9Nil3M03 | O.08 | 1.00 | 2 | 0.035 | 0.03 | 11.00~15.00 | 18.00~20.00 | 3.00~4.00 | - | |
| 12 | 00Crl9Ni13Mo3 | O.030 | 1 | 2 | 0.035 | O.030 | 11.00~15.00 | 18.00~20.00 | 3.00~4.00 | - | |
| 13 | 1Crl8Ni9Ti | O.12 | 1 | 2 | 0.035 | O.030 | 8.00~11.00 | 17.00~19.00 | - | Ti×(wc—O.02) ~O.80 | |
| 14 | 0Crl8Nil0Ti | 0.08 | 1 | 2 | O.035 | O.030 | 9.00~12.00 | 17.00~19.00 | - | Ti>5×wc | |
| 15 | lCrl8NillTi | O.04~O.10 | <0.75 | 2 | O.030 | 0.03 | 9.00~13.00 | 17.00~20.00 | - | Ti4×wc~O.60 | |
| 16 | 0Crl8NillNb | 0.08 | 1 | 2 | O.035 | 0.03 | 9.00~13.00 | 17.00~19.00 | - | Nb≥lO×wc | |
| 17 | lCrl9NillNb | O.04~0.10 | 1 | 2 | 0.035 | 0.03 | 9.00~13.00 | 17.00~20.00 | - | Na+Ta≥8×Wc~1.00 | |
| 18 | OCrl8Nil3Si4 | O.08 | 3.00~5.00 | 2 | 0.035 | O.030 | 11.50~15.00 | 15.00~20.00 | - | - | |
| 19 | OCrl8Nil2M02Ti | O.08 | 1 | 2 | 0.035 | O.030 | 11.00~14.00 | 16.00~19.00 | 1.80~2.50 | Ti5×wc~O.70 | |
| 20 | 1Cr18Ni12M02Ti | 0.12 | 1.00 | 2 | O.035 | 0.03 | 11.00~14.00 | 16.00~19.00 | 1.80_2.50 | Ti5×(Wc一0.02)-0.80 | |
| 21 | lCrl8Ni12Mo3Ti | O.12 | 1 | 2 | O.035 | 0.03 | 11.00~14.00 | 16.00~19.00 | 2.50~3.50 | Ti5×(Wc—O.02)0.80 | |
| 奧氏體鐵索體型 | 22 | OCr26Ni5M02 | O.08 | 1 | 1.5 | O.035 | 0.03 | 3.00~6.00 | 23.00~28.00 | 1.00~3.00 | - |
| 鐵素體型 | 23 | 1Crl7 | 0.12 | 0.75 | 1 | 0.035 | 0.03 | - | 16.00~18.00 | - | - |
| 24 | 00Cr27M0 | O.O1O | O.40 | O.40 | O.030 | O.020 | 允許含有 | 25.00~27.50 | O.75~1.50 | N<0.015 | |
| ≤0.50Ni | |||||||||||
| 25 | (1Cr25Ti) | O.12 | 1 | O.80 | 0.035 | O.030 | - | 24.00~27.00 | - | Ti5×Wc~O.80 | |
(4)力學性能見表6-78。
表6-78鍋爐、熱交換器用不銹鋼無縫鋼管的力學性能
| 組織類型 | 序號 | 牌 號 | 推薦熱處理制度 | 力學性能 | 密度ρ/(g/cm3) | |||
| ób/Mpa | ós或ó0. 2/MPa | δ5(%) | ||||||
| ≥ | ||||||||
| 奧氏體型 | 1 | OCrl8Ni9 | 10lO~1150℃ | 急冷 | 520 | 206 | 35 | 7.93 |
| 2 | lCrl9Ni9 | 10lO~1150℃ | 520 | 205 | 35 | 7.93 | ||
| 3 | 00Crl9Nil0 | 1010~1150℃ | 480 | 175 | 35 | 7.93 | ||
| 4 | 2Cr23Ni13 | 1030~1150℃ | 520 | 205 | 35 | 7.98 | ||
| 5 | OCr23Nil3 | 1030~1150℃ | 520 | 205 | 35 | 7.98 | ||
| 6 | 2Cr25Ni20 | 1030~1180℃ | 520 | 205 | 35 | 7.98 | ||
| 7 | 0Cr25Ni20 | 1030~1180℃ | 520 | 206 | 35 | 7.98 | ||
| 8 | OCrl7Nil2M02 | 1010~1150℃ | 520 | 205 | 35 | 7.98 | ||
| 9 | 1Cr17Nil2M02 | >1040℃ | 520 | 205 | 35 | 7.98 | ||
| lO | 00Crl7Nil4M02 | 10lO~1150℃ | 480 | 175 | 40 | 7.98 | ||
| 11 | OCrl9Ni13Mo3 | 1010~1150℃ | 520 | 205 | 35 | 7.98 | ||
| 12 | 00Crl9Nil3M03 | 1010~1150℃ | 480 | 175 | 35 | 7.98 | ||
| 13 | 1Cr18Ni9Ti | 1000~1100℃ | 550 | 205 | 40 | 7.90 | ||
| 14 | OCrl8NilOTi | 920~1150℃ | 520 | 205 | 35 | 7.93 | ||
| 15 | lCrl8Ni11Ti | 冷軋≥1095℃ 熱軋≥1050℃ | 520 | 205 | 35 | 7.93 | ||
| 16 | 0Crl8NillNb | 9801150℃ | 520 | 205 | 35 | 7.98 | ||
| 17 | lCrl9NillNb | 冷軋≥1095℃ 熱軋≥1050℃ | 520 | 205 | 35 | 7.98 | ||
| 18 | 0Crl8Ni13Si4 | 10lO~1150℃ | 520 | 205 | 35 | 7.98 | ||
| 19 | OCrl8Ni12Mo2Ti | 1000~1100℃ | 530 | 205 | 35 | 8.O | ||
| 20 | lCrl8Nil2Mo2Ti | 1000~1100℃ | 540 | 215 | 35 | 8.O | ||
| 2l | 1Crl8Nil2M03Ti | 1000~1100℃ | 540 | 215 | 35 | 8.1 | ||
| 奧氏體-鐵素體型 | 22 | OCr26Ni5M02 | 950~1100℃ | - | 590 | 390 | 18 | - |
| 鐵素體型 | 23 | 1Crl7 | 780~850℃ | 空冷或緩冷 | 410 | 245 | 20 | 7.7 |
| 24 | 00Cr27Mo | 900~1050℃ | 快冷 | 410 | 245 | 20 | - | |
| 25 | (1Cr25Ti) | 700~800℃ | 空冷 | 440 | 245 | 17 | 7.7 | |
注:1.熱擠壓管的抗拉強度可降低20MPa.
2.鋼管經熱處理并酸洗交貨。凡經整體磨、鏜的或經光亮處理的鋼管可不酸洗交貨。
表6-79鍋爐、熱交換器用不銹鋼無縫鋼管的硬度要求
| 鋼管的牌號 | 洛氏硬度 | 鋼管的牌號 | 洛氏硬度 | ||
| HRB | HRC | HRB | HRC | ||
0Crl8Ni9,1Crl9Ni9,00Crl9Nil0 2Cr23Ni13,0Cr23Ni13.2Cr25Ni20 0Cr25Ni20,0Cr17Nil2M02 00C17Nil4M02,OCr18Nil0Ti | <90 | lCrl7Nil2Mo2.1Cr18Ni11Ti OCrl8Ni11Nb,1Crl9NillNb | <90 | - | |
| OCr26Ni5M02 | - | <29 | |||
| OCrl8Nil3Si4 | <95 | - | |||
注:1.經供需雙方協商,在合同中注明可做上述硬度試驗。
2.對壁厚≥2mm的鋼管可以做洛氏硬度試驗,每一試樣測定3處。
(5)用途適用于鍋爐過熱器、熱交換器、冷凝器、催化管等。
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