ASTM A312 po'lat quvurlari haqida to'liq ma'lumot
ASTM A312 po'lat quvurlari haqida to'liq ma'lumot
ASTM A312 yuqori haroratli/korroziv muhitda ishlatiladigan ostenitik zanglamaydigan po'lat quvurlar (choksiz, payvandlangan, sovuq{1}}ishlangan) uchun asosiy standartdir. U TP304/L va TP316/L kabi materiallar navlarini qamrab oladi va neft-kimyo, oziq-ovqat va farmatsevtika kabi sohalar uchun javob beradi. Ushbu standart ishlab chiqarish jarayonlarini, sinov usullarini (tortish, tekislash), o'lchamlarini (NPS 1/8 "dan 30"+ gacha) belgilaydi va ishonchliligini ta'minlash uchun materiallar toza va oksid shkalasidan xoli bo'lishini talab qiladi. Bu kuch, egiluvchanlik va korroziyaga chidamliligini kafolatlaydi, shu bilan og'ir sharoitlarda ham ishonchli ishlashni ta'minlaydi.
ASTM A312 quvuri nima?
ASTM A312 quvuri turli sohalarda keng qoʻllaniladigan umumiy{1}}zanglamaydigan poʻlat quvurdir. Uning diametri 1/8 dyuymdan 30 dyuymgacha, devor qalinligi esa SCH 10S dan SCH 80S gacha. Tez-tez ishlatiladigan materiallar sinflari TP304/304L va TP316/316L.
Tashqi diametri: 10,3 mm-609,6 mm
Devor qalinligi: 0,2 mm-60 mm
Uzunlik: 5-12 m yoki so'rov bo'yicha moslashtirilgan
Ilovalar: past bosimli suyuqlik, suv, gaz, neft quvurlari, qozonxona quvurlari va boshqalar.
Qo'shimcha jarayonlar: tekis yoki tishli ulanish (rozetkali yoki burchakli, plastik qopqoq bilan), gidrostatik sinov, girdob oqimi sinovi, infraqizil termal tahlil
Yuzaki ishlov berish: Yorqin tavlanish, tuzlash, qumlash yoki passivatsiya
Yetkazib berish holati: Issiq haddelenmiş, sovuq tortilgan
Chelik navlari: TP304, TP304L, TP316, TP316L, TP321, TP347
ASTM A312 Kimyoviy tarkibi
| Chelik darajasi | ASTM A312 Kimyoviy tarkibi % Maks | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| C | Mn | P | S | Si | Cr | Ni | Mo | N B | Nb | Ti | |
| TP304 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 18.0-20.0 | 8.0-11.0 | … | … | … . | … |
| TP304H | 0.04-0.10 | 2.00 | 0.045 | 0.030 | 1.00 | 18.0-20.0 | 8.0-11.0 | … | … | … | … |
| TP304L | 0.035 D | 2.00 | 0.045 | 0.030 | 1.00 | 18.0-20.0 | 8.0-13.0 | … | … | … | … |
| TP310S | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 24.0-26.0 | 19.0-22.0 | 0.75 | |||
| TP316 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 16.0-18.0 | 11.0-14.0 | 2.00-3.00 | … | … | … |
| TP316L | 0.035 | 2.00 | 0.045 | 0.030 | 1.00 | 16.0-18.0 | 10.0-14.0 | 2.00-3.00 | … | … | … |
| TP316H | 0.04-0.10 | 2.00 | 0.045 | 0.030 | 1.00 | 16.0-18.0 | 11.0-14.0 | 2.00-3.00 | … | … | … |
| TP316Ti | 0.08 | 2.00 | 0.045 | 0.030 | 0.75 | 16.0-18.0 | 10.0-14.0 | 2.00-3.00 | 0.10 | … | 5x(C+N)-0.70 |
| TP321 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 17.0-19.0 | 9.0-12.0 | … | 0.10 | … | 5C-0.70 |
| TP321H | 0.04-0.10 | 2.00 | 0.045 | 0.030 | 1.00 | 17.0-19.0 | 9.0-12.0 | … | … | … | 4C-0.60 |
| TP347 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 17.0-19.0 | 9.0-13.0 | 10xC-1,00 | … | ||
| TP347H | 0.04-0.10 | 2.00 | 0.045 | 0.030 | 1.00 | 17.0-19.0 | 9.0-13.0 | … | … | 8xC-1.00 | … |
ASTM A312 Mexanik xususiyat
| ASTM A312 Mexanik xususiyatlari | |||||
|---|---|---|---|---|---|
| Chelik darajasi | Issiqlik Davolash |
Harorat Min. º F(º C) |
Mustahkamlik chegarasi Ksi (MPa), min. |
Hosildorlik kuchi Ksi (MPa), min. |
Uzayish %, min |
| TP304 | Yechim | 1900 (1040) | 75(515) | 30(205) | 35 |
| TP304L | Yechim | 1900 (1040) | 70(485) | 25(170) | 35 |
| TP304H | Yechim | 1900 (1040) | 75(515) | 30(205) | 35 |
| TP310S | Yechim | 1900 (1040) | 75(515) | 30(205) | 35 |
| TP316 | Yechim | 1900(1040) | 75(515) | 30(205) | 35 |
| TP316L | Yechim | 1900(1040) | 70(485) | 25(170) | 35 |
| TP316H | Yechim | 1900(1040) | 75(515) | 30(205) | 35 |
| TP316Ti | Yechim | 1900(1040) | 75(515) | 30(205) | 35 |
| TP321 | Yechim | 1900(1040) | 75(515) | 30(205) | 35 |
| TP321H | Yechim | Sovuq: 2000 (1100) Issiq: 1925 (1050) |
75(515) | 30(205) | 35 |
| TP347 | Yechim | 1900(1040) | 75(515) | 30(205) | 35 |
| TP347H | Yechim | Sovuq: 2000 (1100) Issiq: 1925 (1050) |
75(515) | 30(205) | |
ASTM A312 Ekvivalent po'lat darajasi
| ASTM A312 | JIS G3459 | DIN 17440 | BS | NF |
|---|---|---|---|---|
| TP304 | SUS 304 TP | X5CrNi 18 9 | 304S18 | A 49-230 |
| TP304H | SUS 304 HTP | 304S59 | A 49-214 | |
| TP310 | 304 LTP | X2 CrNi 19 9 | 304S14 | A 49-230 |
| TP316 | SUS 304L TP | |||
| TP316H | 310STP | X5 CrNiMo 18 10 | 316S18 | A 35-573 |
| TP316L | SUS 316 TP | 316S59 | A 49-230 | |
| TP321 | SUS 316 LTP | X2 CrNiMo 18 10 | 316S14 | A 49-230 |
| TP347 | 316 HTP | x10 CrNiTi 18 9 | 321S18 | A 49-230 |
| TP347H | SUS 316 LTP | X5 CrNiNb 18 9 | 347S18 | A 35-573 |
ASTM A312 nominal devor qalinligi (choksiz va tekis tikuvli payvandlangan po'lat quvur)
| NPS | ASTM A312 WT bardoshlik, % | |
|---|---|---|
| + | – | |
| 1/8-2 1 /2 | 20.0 | 12.5 |
| 3~18, t/D 5% dan kam yoki teng | 22.5 | 12.5 |
| 3~18, t/D> 5% | 15.0 | 12.5 |
| 20 dan katta yoki teng, payvandlangan | 17.5 | 12.5 |
| 20 dan katta yoki teng, choksiz, t/D 5% dan kam yoki teng | 22.5 | 12.5 |
| ≥ 20, seamless, t/D> 5% | 15.0 | 12.5 |
ASTM A312 zanglamaydigan po'lat quvurlari OD bardoshlik
| NPS | ASTM A312 OD tolerantligi | |||
|---|---|---|---|---|
| + | – | |||
| dyuym | mm | dyuym | mm | |
| 1/8~1 1 /2 > 1 1 /2~4 > 4~8 > 8~18 > 18~26 > 26~34 > 34~48 |
1/64(0.015) 1/32(0.031) 1/16(0.062) 3/32(0.093) 1/8(0.125) 5/32(0.156) 3/16(0.187) |
0.4 0.8 1.6 2.4 3.2 4.0 4.8 |
1/32(0.031) 1/32(0.031) 1/32(0.031) 1/32(0.031) 1/32(0.031) 1/32(0.031) 1/32(0.031) |
0.8 0.8 0.8 0.8 0.8 0.8 0.8 |
