Drill Pipe Sub Suppliers and Manufacturers

Kelly is the drive part of whole drill stem, it has two types, square kelly and hexagonal kelly and all of them are manufactured comfort to API Spec7-1 and SY/T6509-2000 criterion. Our� Square& Hexagonal kelly are made from AISI 4145H modified alloy bars that are quenched and tempered full length. After such heat treatment, its brinell hardness can reach 285-341. Kelly end, drive cross-section and joint are all processed and tested comform to API criterion.

The six-party drill pipe is made from AISI4145HMOD alloy steel According to API Spec.7 -1. IT is formed by hot forged and fully heat-treated by intermediate frequency induction heat treatment or 20m horizontal optical resistance furnace to threads are phosphated, copperrized or cold worked.   Standard size of hexagonal kelly;Each can reach a total length of 27 meters. Kelly size Length drive section Length overall Length drive section LD Standard LD Optional L standard L optional DFL Across flate DC Across cornere DCC Across cornere Rc Radlue Rcc Radlue Wall thickness eccentric bore 76.2 3 11280 12190 76.2 85.7 85.73 6.4 42.9 12.1 88.9 3 1/2 11280   12190 88.9 100.8 100.0 6.4 50.0 13.3 108.0 4 1/4 11280 15540 12190 16460 108.0 122.2 121.4 9.9 60.7 15.9   133.4 5 1/4 11280 15540 12190 16460 133.4 151.6 149.86 9.9 75.0 15.9   133.4 5 1/4 11280 15540 12190 16460 133.4 175.4 171.45 15.9 85.7 15.88 152.4 6 11280 15540 12190 16460 152.4 173.0 173.02 9.5 86.5 15.9   152.4 6 11280 15540 12190 16460 152.4 173.0 173.02 9.5 86.5 15.9   Upper box connection Thread size and style LF O.D. Bevel diameter Standard optional DU standard DU optional LU DF Standard DF optional 6 5/8 REG 4 1/2 REG 196.9 146.1 406.4 186.1 134.5 6 5/8 REG 4 1/2 REG 196.9 146.1 406.4 186.1 134.5 6 5/8 REG 4 1/2 REG 196.9 146.1 406.4 186.1 134.5 6 5/8 REG 196.9   406.4 186.1   Lower pin connection I.D. Label O.D. LL DF Bevel diameter NC26 85.7 508 82.9 31.8   NC31 104.8 508 100.4 44.5 NC38 120.7 508 116.3 57.2 NC46 158.8 508 145.3 71.4 NC50 161.9 508 154.0 71.4 5 1/2 FH 177.8 508 170.7 82.6 NC56 177.8 508 171.7 82.6

Customised cast iron castings manhole covers, valve boxes, gully grating, surface boxes, tree gratings.

Stainless steel coil , sheet, pipe and tubes.

Straight subs: Used to connect drill stem members that have a similar OD. Reduced-section sub: Used to connect drill stem members that have different diameters that warrant the cross-sectional change necessary to accommodate different connections. Saver sub: Used to extend the life of the rotary kelly by taking the connection wear each time it is made up to a drill stem component. Bit sub: Size availability ranges from 3 1/8 in to 11inch OD and 36in to 48in length. Lift sub: A lift sub enables the safe, efficient handling of straight OD tubular, such as drill collars, shock tools, jars, directional equipment, and other tools, by using the drill pipe elevators. Top drive sub: Top drive subs serve as the sacrificial element between the drill string and the top drive, reducing repair and maintenance costs.

1.API standard drilling cross-over sub 2.BOX x BOX, BOX x PIN, PIN x PIN 3.Different API Standard connection type, e.g. NC, REG, FH, IF etc. 4.Apply to HDD, Geothermal, Gas, Oil and Water well drilling.

Drill subs are an important integral part of everyday drilling. Not having the right thread adapter can make your life miserable. We have a large inventory of common and not so common sizes. Custom sizes are always available. Rotary subs have two primary applications. They can be used to cross over from one connection size to another, or as the disposable component used to extend the connection life of a more expensive drill stem member. Installing a float sub (with check valve) is always a good idea when drilling in wet situations.

Drill subs are an important integral part of everyday drilling. Not having the right thread adapter can make your life miserable. We have a large inventory of common and not so common sizes. Custom sizes are always available. Rotary subs have two primary applications. They can be used to cross over from one connection size to another, or as the disposable component used to extend the connection life of a more expensive drill stem member. Installing a float sub (with check valve) is always a good idea when drilling in wet situations.

Drill subs are an important integral part of everyday drilling. Not having the right thread adapter can make your life miserable. We have a large inventory of common and not so common sizes. Custom sizes are always available. Rotary subs have two primary applications. They can be used to cross over from one connection size to another, or as the disposable component used to extend the connection life of a more expensive drill stem member. Installing a float sub (with check valve) is always a good idea when drilling in wet situations.

Drill subs are an important integral part of everyday drilling. Not having the right thread adapter can make your life miserable. We have a large inventory of common and not so common sizes. Custom sizes are always available. Rotary subs have two primary applications. They can be used to cross over from one connection size to another, or as the disposable component used to extend the connection life of a more expensive drill stem member. Installing a float sub (with check valve) is always a good idea when drilling in wet situations.

Integral heavy weight drill pipes are manufactured from AISI 4142H-4145H modified drill collar material , thick-walled pipe called integral heavy weight drill pipe was developed to provid a gradual transition from the heavy weight drill collars to the relatively light weight drill pipe. This intermediate weight pipe has a wall thickness of approximately, and it helps prevent stress concentration at the� top of the drill collars. It also allows you to drill at higher pms, reducing torque and differential pressure sticking. It is intended primarily for directional drilling. Because it bends easily, it simplifies directional control and�  minimizes connection fatigue problems common to high angle or horizontal drilling. The reduced number of pipe failures and increased drill stem service also make it appropriate for some straight hole applications. Specification OD ID connection Body Weight mm in mm in Style OD Inner and outer thread Upset mm in Mmd center area Mm � End area Type I�  (Length is 9300mm for one piece) ZH-J66-6 5/8FH-I 168.3 6 5/8 114.3 4 1/2 6 5/8FH 209.6 8 1/4 195.70 184.2 176.21 965KG ZH-J55-5 1/2FH-I 139.7 5 1/2 92.1 3 5/8 5 1/2FH 177.8 7 170.7 152.4 144.5 730KG ZH-J50-NC50-I 127.0 5 76.2 3 NC50 168.3 6 5/8 154.0 139.7 130.2 700KG ZH-J45-NC46-I 114.3 4 1/2 71.4 2 13/16 NC46 158.8 6 1/4 145.3 127.0 117.5 585KG ZH-J35-NC38-I 88.9 3 1/2 52.39 2 1/16 NC38 120.7 4 3/4 116.3 101.6 92.1 370KG ZH-J29-NC31-I 73.03 2 7/8 50.8 2 NC31 104.8 4 1/8 100.4 84.1 81.0 220KG Type II�  (Length is 13500mm for one piece) ZH-J50-NC50-II 127.0 5 76.2 3 NC50 168.3 6 5/8 154.0 139.7 130.2 945 ZH-J45-NC46-II 114.3 4 1/2 71.4 2 13/16 NC46 158.8 6 1/4 145.3 127.0 117.5 790

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