JIS-B-2303-1995-R2005-ENG.pdf
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1、JIS Ba2303 95 = 4733608 0532b24 081 U DC 62 1.643.4 1 4:62 1.648.2 JAPANESE INDUSTRIAL STANDARD Screwed drainage fittings GJ, JIS B 2303-19g5 Translated and Published bY Japanese Standards Association Printed in Japan 10 s Copyright Japanese Standards Association Provided by IHS under license with J
2、SALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/15/2007 07:45:59 MDTNo reproduction or networking permitted without license from IHS -,-,- JIS B*2303 95 W 4933608 0532625 TL8 In the event of any doubt arising, the original Standard in Japanese is to be final authority Errat
3、a for JIS (English edition) are printed in Standardization oumal, published monthly by the Japanese Standards Association. Errata will be provided upon request, please contact: Business Department, Japanese Standards Association 4-1-24, Akasaka, Minato-ku, Tokyo, JAPAN 107 TEL. 03-3583-8002 FAX. 03-
4、3583-0462 Errata are also provided to subscribers of JIS (English edition) in Monthly information. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/15/2007 07:45:59 MDTNo reproduction or networking
5、permitted without license from IHS -,-,- J I S E*i2303 95 4933608 0532626 954 W UDC 621.643.414:621.648.2 JAPANESE INDUSTRIAL STANDARD J I S Screwed drainage fittings B 2303-1995 1. Scope This Japanese Industrial Standard specifies screwed drainage fittings, hereafter referred t a as “fittings“, use
6、d for the drainage pipings by using carbon steel pipes of JIS G 3452. Remarks 1. Standards cited in this Standard are as follows. JIS B 0203 JIS B 0253 JIS G 3452 JIS G 5501 JIS G 5702 JIS H 0401 Taper pipe threads Gauges for taper pipe threads Carbon steel Gipes for ordinary piping Grey iron castin
7、gs Blackheart malleable iron castings Methods of test for hot dip galvanized coatings 2. The units and numerical values given in 1 in this Standard are based on the traditional units, and appended for informative reference. 2. Classification 2 . 1 Classification by materials into two classes of thos
8、e made of cast iron and of malleable cast iron. The fittings shall be classified by the materials 2.2 Classification by shapes types as the following: The fittings shall be classified by shapes into 21 90“ elbow, 90“ long turn elbow, 45“ elbow, 22“1/2 elbow, Ventilation tee, 90“ Y-branch, 90“ Y-bran
9、ch reducing, 90“ double Y-branch, 90“ double Y-branch reducing, 90“ long turn Y-branch, 90“ long turn Y-branch reducing, 90“ long turn double Y-branch, 90“ long turn double Y-branch reducing, 45“ Y-branch, 45“ Y-branch reducing, 45“ double Y-branch, 45“ double Y-branch reducing, socket, increaser, t
10、acker, and U trap. 3. Designation of size be given by designating the threads of the fitting on the basis of designation of thread in accordance with JIS B 0203. The symbol of PT, however, shall not be attached to this designation. Besides, the nominal size of the reducing fittings shall be expresse
11、d in the se- quence of designation as for the larger diameter and for the smaller diameter. The designation expressing the size of the fitting shall 4. Leakage others, when the water pressure of 0.35 MPaI3.5 kgf/cm2 or the air pressure of 0.15 MPa(l.5 kgf/cm2 is applied on them. The fittings shall b
12、e free from such abnormalities as leakage and 5. Shape and dimensions to Attached Tables 1 to 10. The tolerances on length from center to face or face The shape and dimensions of fittings shall conform to face, however, shall conform to Table 1, and for the dimensions not provided with the tolerance
13、s, the preferable dimensions are indicated. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/15/2007 07:45:59 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S B*2303 9
14、5 m 4933b8 0532627 890 m Basic Tolerance 2 B 2303-1995 Over 30 Over 50 Over 75 Over 100 Over 150 Over 200 Over 300 to to to to to 30 or to leSS 50 incl. 75 incl. I 100 incl. 150 incl. 200 incl. 300 incl. I1.5 f2 12.5 I 3 k3.5 I 4 I 5 I 6 6. Threads JIS B 0203. The threads of the fittings shall be th
15、e taper threads specified in 7. Appearance and be free from defects such as cracks and harmful flaws, casting fins and sand inclusion. The inside and outside surfaces of the fittings shall be smooth 8, Materials The materials for the fittings shall conform to Table 2. Table 2. Classification I Mater
16、ial Cast iron fittings I FC150 of JIS G 5501 Malleable cast iron fittings FCMB270 of JIS G 5702 9. Plating carried out prior to threads cutting work. In the case of plating the fittings, zinc hot dip galvanizing shall be 10. Inspections (1) to (6). The sampling inspection plan in the lot inspection,
17、 however, shall be The inspections for the fittings shall conform to the following determined between the purchaser and supplier: Leakage inspection ments of 4. The leakage inspection shall conform to the require- Shape and dimension inspection shall conform to the requirements of 5. The shape and t
18、he dimension inspection Threads inspection (a) Appearance of threaded portion The threads inspection shall conform to the following: The complete thread shall be free from defects such as harmful thin thread and broken crest. (b) Fitting of threads The fitting of the threads shall conform to the req
19、uirements of 6., when inspected using JIS B 0253. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/15/2007 07:45:59 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S i3
20、32303 95 4933b08 0532628 727 Material of cast iron pipe fitting Material of malleable cast iron pipe fitting 3 B 2303-1995 Tensile test Class 2 specified in JIS G 5501 Tensile test Class 1 specified in JIS G 5702 Transverse test, Class 2 specified in JIS G 5501 (c) Deviation of axes of threads The d
21、eviation of angle between axes of the threads shall be 2 mm or less per 300 mm in distance for the main axes and be 3 mm or less for the others. Appearance inspection requirements of 7. The appearance inspection shall conform to the Material inspection The material inspection shall be carried out on
22、 the tensile test and transverse test, and shall conform to the requirements of Table 3. Table 3. Classification of material I Tensile test 1 Transverse test (6) Plating inspection The plating inspection shall conform to the following: (a) Appearance of plated part The plated surface shall be unifor
23、mly attached with the plated layer. (b) Copper sulfate test JIS H 0401. The copper sulfate test shall conform to 4. of Besides, the number of dippings, in this case, shall be five times. 11. Designation of products The designation of fittings shall be given by the name of Standard, classification by
24、 material, classification by shape and nominal size. 1 1 Examples: Screwed drainage fitting cast iron 45“ elbow 1 , . Screwed drainage fitting malleable cast iron 45“ elbow 1 12. Marking The fittings shall be clearly marked with the designation and manufacturers name or abbreviation by the embossmen
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