This standard specifies the specifications, technical requirements, marking and packaging of clamps. This standard applies to clamps used to connect tray plates and support rings, downcomers and support plates in plate-type tower equipment in the chemical and petroleum industries. JB/T 1119-1999 Clamp JB/T1119-1999 Standard download decompression password: www.bzxz.net

ICS75.180
Machinery Industry Standard of the People's Republic of China
JB/T1119—1999bzxz.net
Clip
Holding-dbwnclip
Published on July 12, 1999
National Bureau of Machinery Industry
Implemented on January 1, 2000
JB/T1119-1999
This standard is a revision of B1119—81 "Clip". Compared with JB1119-81, the main technical content of this standard has been changed as follows: In Table 1, the material has been modified accordingly according to the changes in steel standards; the thickness of the elliptical pad has been uniformly revised to 2.5mm, and the weight of each set of clips has also been revised accordingly.
This standard replaces JB1119—81 from the date of implementation. This standard is proposed and managed by Lanzhou Petroleum Machinery Research Institute. The responsible drafting unit of this standard is Lanzhou Petroleum Machinery Research Institute. The drafters of this standard are Dong Yiliang and Song Qixiang. This standard was first issued in 1968, revised for the first time in 1981, and this revision is the second revision. Lanzhou Petroleum Machinery Research Institute is responsible for the interpretation of this standard. 1
Mechanical Industry Standard of the People's Republic of China
Holdingdown clip
This standard specifies the varieties, specifications, technical requirements, marking and packaging of clips. JB/T 1119—1999
Replaces JB1119—81
This standard applies to the clips used to connect the tray plate and the support ring, the downcomer plate and the support plate in the plate tower equipment in the chemical and petroleum industries. 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and the parties using this standard should explore the possibility of using the latest version of the following standards. GB/T 196—1981
GB/T 912—1989
GB/T1220—1992
GB/T6170—1986
JB/T1205—1980
3 Varieties and specifications
Basic dimensions of common threads (diameter 1~600mm)Hot-rolled thin steel plates and strips of carbon structural steel and low-alloy structural steelStainless steel bars
Type 1 hexagonal nuts
Grade A and B
Technical conditions for tower trays
3.1 The clamp consists of a clamp plate, an elliptical pad, a round head bolt and a nut. Its structure, size and material are shown in Figures 1 to 4 and Table 1. Elliptical pad
Ring head bolt
Approved by the State Machinery Industry Bureau on July 12, 1999 and implemented on January 1, 2000
14K120
15K140
Figure 3 Elliptical pad
JB/T1119
9—1999
d, R3n
Figure 2 Card plate
Its price
Figure 4 Round head bolt
Round head bolt
Elliptical pad
JB/T1119—1999
3.2 The thickness h of the applicable support ring or downcomer plate and support plate are 6, 8, 10, 12, and 14 mm respectively. 3.3 If you need to use materials not specified in Table 1, you can make a separate request when ordering and indicate it in the drawing. 4 Technical requirements
When spot welding round head bolts and card plates, the direction of the small groove at the end should be consistent with the length direction of the card plate (as shown in Figure 1) so that the orientation of the clip can be identified when using it.
4.2 The plate materials used to manufacture the clips should meet the requirements of GB/T912; the profiles should meet the requirements of GB/T1220. 4.3
The thread of the round head bolt should be in accordance with the GB/T196 coarse pitch ordinary thread. The nuts should be made of GB/T6170 hexagonal nuts.
5 Marking and packaging
The marking of the clip consists of three parts:
K—means "clip";
—6, 8, 10, 12, 14—respectively indicate that the applicable thickness of the clip is 6, 8, 10, 12, 14mm;-A—means that the material of the clip, pad, nut is Q235-A, and the material of the bolt is 1Cr13; B—means that the material of the clip, pad, nut, bolt is 0Cr18Ni9; C—means that the material of the clip, pad, nut, bolt is 0Cr17Ni12Mo2. Marking example:
The applicable thickness h is 10mm, and the clip is mainly made of 0Cr18Ni9 material, and its mark is: Clip K10B
JB/T11191999
5.2 If the user needs, it can be proposed that the mark should be printed on the surface of the finished product. The printing method and marking content shall be agreed upon by the supply and demand parties. 5.3 The acceptance and packaging of the clips shall comply with the provisions of JB/T1205. 3
Mechanical Industry Standard
JB/T1119—1999
Published and issued by the Mechanical Science Research Institute
Printed by the Mechanical Science Research Institute
(No. 2 Shouti South Road, Beijing: Postal Code 100044)*
Word count 8,000
1/16 Printing sheet 1/2
Format 880×1230
First edition in November 1999 First printing in November 1999 Printing quantity 1-500
Price 5.00 yuan
No. 9-1012
Mechanical Industry Standard Service Network: http:/wwwJB.accn6661-61 /
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