定稿 ASTM A 269-08一般用途的无缝和焊接不锈钢管规范(3)

10.1 每根钢管必须经无损电测（涡流）试验或水压试验。测试类型由制造商选择，除非采购订购单另有指定。

11. Hardness Requirements 硬度要求

11.1 Grades TPXM-29, S34565, N08367, and N08926 tubes shall have a hardness number not exceeding 256 HB/270 HV or 100 HRB. Grades TPXM-10, TPXM-11, and TPXM-19 tubes shall have a hardness number not exceeding 269 HB/285 HV or 25 HRC. S20100 and S31254 shall have a hardness number not exceeding 220 HB/230 HV or 96 HRB. S20153 and S32654 shall have a hardness number not exceeding 250 HB/263 HV or 100 HRB. Tubes made from all other grades shall have a hardness number not exceeding 192 HB/200 HV or 90 HRB. 11.1 TPXM - 29，S34565，N08367和N08926钢种的钢管硬度不超过256 HB/270HV或100HRB。TPXM-10，TPXM-11，和TPXM–19钢种的钢管硬度不超过269 HB/285HV或25HRC。 S20100和S31254的硬度不超过220 HB/230HV或96HRB。 S20153和S32654的硬度不超过250 HB/263HV或100HRB。所有其他钢种的硬度不超过192 HB/200HV或90HRB。

11.2 For tubing less than 0.065 in. (1.65 mm) in wall thickness, it is permissible to use the Rockwell superficial hardness test or the Vickers hardness test. When the Vickers test is used, the values of 11.1 will apply. The superficial hardness number for Grade TPXM-29 and S20153 tubes shall not exceed 80 on the 30 T scale or 92 on the 15 T scale. The hardness number for Grades TPXM-10, TPXM-11, and TPXM-19 tubes shall not exceed 46 on the 30 N scale or 73 on the 15 N scale. The hardness number for S20100 and S31254 shall not exceed 79 on the 30 T scale or 91 on the 15 T scale. Tubes made from all other grades shall not exceed 74 on the 30 T scale or 88 on the 15 T scale.

11.2 小于0.065英寸（1.65毫米）壁厚的钢管允许使用的洛氏硬度试验或维氏硬度测试，当使用维氏试验时，其值为11.1。对于钢种TPXM-29和S20153的钢管表面硬度值在30吨时不得超过80或在15 T时不能超过92。钢种TPXM-10，TPXM- 11，和TPXM-19管子的表面硬度值在载荷30T时不得超过46或在载荷15T时不得超过73。钢种S20100和S31254硬度值在30T时不得超过79或在15T时不得超过91。所有其他钢种的管子硬度值在30T时不得超过74或在15T时不得超过88。

11.3 The hardness test shall not be required on tubes smaller than 1 4 in. (6.4 mm) in inside diameter or tubes having a wall thickness thinner than 0.020 in. (0.51 mm) (see A2.4 of Methods and Definitions A 370). Smaller or thinner tubes should be tension tested only, in accordance with Specification A 632.

11.3 对于内径小于1 / 4英寸（ 6.4mm）或壁厚小于0.020英寸（ 0.51mm） （见方法A2.4和定义370 ）的钢管硬度无须测试。小或薄管按照规范A632仅作拉伸试验。

12. Permissible Variations in Dimensions

允许的尺寸偏差

12.1 Variations in outside diameter, wall thickness, and length, from those specified, shall not exceed the amounts prescribed in Table 3.

TABLE 3 Permissible Variations in Dimensions

12.1 具体规定这些外径、壁厚、长度偏差，不得超过表3规定。

表3：直径允许偏差

A: When tubes as ordered require wall thicknesses 3 4 in. (19.0 mm) or over, or an inside diameter 60 % or less of the outside diameter, a wider variation in wall thickness is required. On such sizes a variation in wall thickness of 12.5 % over or under will be permitted.

For tubes less than 1 2 in. (12.7 mm) in inside diameter which cannot be successfully drawn over a mandrel, the wall thickness may vary ±15 % from that specified.

A:当管规定壁厚为3 / 4英寸（19mm）以上或内径60 ％或更少的外径，所要求的壁厚公差范围大。这种壁厚的变化在12.5 ％以上或以下都是可以允许的。

当钢管的内径小于1 / 2英寸（ 12.7mm）不能将芯棒拔出，其壁厚可在规定的基础上浮动±15 ％。

B: These tolerances apply to cut lengths up to and including 24 ft (7.3 m). For lengths greater than 24 ft (7.3 m), the above over tolerances shall be increased by 1 8 in. (3 mm) for each 10 ft (3 m) or fraction thereof over 24 ft, or 1 2 in. (13 mm), whichever is lesser.

B:切断长度的公差对于长度大于24英尺（ 7.3m），包括24英尺（ 7.3m），以上的公差应按每10英尺（ 3m）增加1/ 8英寸（ 3m）或1 / 2英寸（13mm） ，反之减小。

C: Ovality provisions of 12.2 apply. C: 椭圆度规定按12.2条款。

12.2 The permissible variations in outside diameter given in Table 3 are not sufficient to provide for ovality in thin-walled tubes, as defined in the Table. In such tubes, the maximum and minimum diameters at any cross section shall deviate from the nominal diameter by no more than twice the permissible variation in outside diameter given in Table 3; however, the mean diameter at that cross section must still be within the given permissible variation.

12.2 表3所给的外径允许偏差不足以提供薄壁管的椭圆度。这些钢管在任何截面的最大和最小直径应偏离标称直径不超过表3中外径允许偏差的两倍；但是，平均直径在截面必须在给定的允许偏差范围。

13. Surface Condition 表面状态

13.1 The tubes shall be pickled free of scale. When bright annealing

is used, pickling is not necessary.

13.1 管子应按规定酸洗。当使用光亮退火时不需要酸洗。 SUPPLEMENTARY REQUIREMENTS 补充要求

14. Product Marking 产品标识 The following supplementary requirements shall apply only when

specified by the purchaser in the inquiry, contract, or order. 14.1 In addition to the marking prescribed in Specification A 1016/A

1016M, the marking shall include whether the tubing is seamless or 下面补充规定仅在采购方询问、合同或订单上有要求的情况适welded and the final heat-treatment temperature in degrees 用。 Fahrenheit after the suffix “HT” if the final heat treatment S1. Stress-Relieved Annealed Tubes 消除钢管应力退火 temperature is under 1900°F (1040°C). S1.1 For use in certain corrosives, particularly chlorides where 14.1 除A1016 /A1016M详细表明标记规定外，标识应包括是无stress corrosion may occur, tubes in Grades TP304L,TP316L, TP321, 缝管材或焊接管，如果最终的热处理温度为1900°F（ 1040℃）TP347, and TP348 may be specified in the stress-relieved-annealed 最终热处理温度用华氏温度标记后缀“HT”。 condition.

14.2 When the Nondestructive Electr …… 此处隐藏：4954字，全部文档内容请下载后查看。喜欢就下载吧 ……