| 标准： | 美国材料试验协会 A213/ASME SA213 | 材料 | TP304/304L/304H |
|---|---|---|---|
| 尺寸 | 1.8” To 6” | 长度 | 6 米或根据需要指定长度 |
| 包装 | 层叠木箱 | 完成： | 光亮退火 |
| 强光 | 不锈钢卷管， 焊接钢管 | ||
ASTM A213/ASME SA213 TP304 BRIGHT ANNEALED STAINLESS STEEL TUBE FOR HEAT EXCHANGER
概述：
Most stainless steel tubing is heat treated by the bright annealing process， in which the tubing is annealed in a protective medium to prevent discoloration of the bright surface. Since austenitic stainless steel is the most often used tubing material， the heat treatment process is bright annealing of austenitic stainless steel in essence.
The stainless steel tubing is generally produced by a cold-drawing process. A subsequent annealing process is required to eliminate residue stress and obtain improved softness and ductility. Meanwhile， since chromium carbides formed at the grain boundaries during high-temperature exposure may result in susceptibility of the austenitic stainless steel to intergranular corrosion， they must be dissolved during annealing before cooling begins. If the annealing is conducted in a protective atmosphere such as pure hydrogen or dissociated ammonia， the formation of an oxide layer on the tubing exterior and interior surfaces can be completely avoided. The stainless steel tubing maintains its original metal luster as well as excellent surface finish. There is no need for a subsequent pickling process.
规格
| 规格 | ASTM A213 及其等效 ASME、DIN 和 EN 标准。 |
| 年级 | 304， 304H， 304L， 304LN. |
| 类型 | Superheater， Seamless Ferritic and Austenitic Boiler and Heat-Exchanger Tubes |
| 外径尺寸 | 1/4” OD， NB to 3” OD， NB sizes |
| 壁厚 | 1mm to 12mm， SCH 5/5S， 40/40S， 10/10S， 20/20S， 80/80S， 120/120S， 160/160S as per ANSI B36.19/36.10 |
| 长度 | 最长 6 米，可定制切割长度 |
| 结束语 | No.4 finish， No.1 Pickled Finish， BA Finish， Electropolished Seamless Tubes |
| 其他测试 | Product Analysis， Radiographic Examination， Transverse Tension Test， Flattening Test， Etching Test， Stabilizing Heat Treatment， Intergranular Corrosion Test， Grain Size Test， NACE 0175， Dual Grade， Weld Decay Test， Magnetic Particle Detection， PWHT (POST WELD HEAT TREATMENT)， Flare Test， Bend Test， Hardness Test， Tensile Test etc |
| 尺寸 | 所有管材均按照 ASTM 和 ASME 等相关标准进行生产和检验/测试 |
| 包装 | Loose / Bundle / Plastic Cloth Wraps / Wooden Pallet / Wooden Box / Plastic End Caps / Beveled Protector |
化学成分
| 等级 | UNS | C | 锰 | P | S | Si | Cr | 倪 |
| 304 | S30400 | 0.08 最大值 | 最多 2.00 | 0.045 最大值 | 0.03 最大值 | 最大 1.00 | 18.0-20.0 | 8.0-11.0 |
| 304L | S30403 | 0.035 最大值 | 最多 2.00 | 0.045 最大值 | 0.03 最大值 | 最大 1.00 | 18.0-20.0 | 8.0-12.0 |
| 304H | S30409 | 0.04-0.10 | 最多 2.00 | 0.045 最大值 | 0.03 最大值 | 最大 1.00 | 18.0-20.0 | 8.0-11.0 |
机械性能
| 等级 | 拉伸强度，最小，ksi (MPa) | 屈服强度， 最小， ksi (MPa) | 2 英寸伸长率 或 50 毫米，最小值（%） | 硬度 | 溶解温度， 最小，°F（°C） | |
| 罗克韦尔 | 布氏/维氏 | |||||
| 304 | 75(515) | 30(205) | 35 | 90HRB | 192HBW/200HV | 1900(1040) |
| 304L | 70(485) | 25(170) | 35 | 90HRB | 192HBW/200HV | 1900(1040) |
| 304H | 75(515) | 30(205) | 35 | 90HRB | 192HBW/200HV | 1900(1040) |
同等学历：
| 标准 | WERKSTOFF NR. | 统一编号系统 | 欧洲标准 | AFNOR | 英国标准 | 社会变革管理计划 | 日本标准 |
| 304 | 1.4301 | S30400 | X5CrNi18-10 | Z7CN18-09 | 304S31 | 08Х18Н10 | SUS 304 |
| 304L | 1.4306 / 1.4307 | S30403 | X2CrNi18-9 / X2CrNi19-11 | Z3CN18-10 | 304S11 | 03Х18Н11 | SUS 304L |
| 304H | 1.4948 | S30409 | X6CrNi18-10 | Z6CN18-09 | 304S51 | 08KH18N10 | SUS 304H |
应用：
1.Oil & Gas Equipments
2.Offshore Technology
3.Seawater Desalination Plants
4.Chemical Industry
5.Bridges
6.Storage Tanks
7.Medical Industry
8.Civil Engineering
9.Pressure Vessels， Reactor Tanks， and Heat Exchangers
10.Rotors， Impellers and Shafts
11.Power Plants
12.Petrochemical
13.Shipbuilding Industry
