Drilling equipment is used for drilling and construction of this specific conditions of the mechanical devices and equipment, divided into drilling equipment and Drilling tools two categories. Drilling equipment mainly by drilling rig, mud pump and mud purification equipment, mud mixer, drilling tower and other components,and drling tools includes driling pipe, adapter/kelly and collar.
Friction welding drill pipe and adapter
Friction welding drill pipe and adapter are in accordance with API SPEC 5DP and SY/T5561-2008 Specifications.The steel grade are DZ250,R780,G105,S135 that are after partly or overall heat treatment.The adapter part adopts thermal refining to superior alloy steel 35CrMo or 4137H that`s after thread hardening treatment and phosphating to better antiseize.It also can be produced upon customers` requirements.
Technical specifications
Drill Pipe Diameter
Upset Type
RSC
Model
Steel Grade
mm
Wall
Thickness
mm
External diameter
of upset end
mm
Internal diameter
of upset end
mm
in
60
2 3/8
EU
NC26
DZ50,R780
6/7.11
65.1
46.10
EU
NC26
G105,S135
7.11
65.1
39.67
73
27/8
EU
NC31
DZ50,R780
9
81.0
54.64
EU
NC31
G105,S135
9.19
81.0
50.80
89
31/2
EU
NC38
DZ50,R780
10
98.4
66.09
EU
NC38
G105,S135
9.35
98.4
63.50
114
41/2
IEU
NC46
DZ50,R780
8
127.0
92.00
IEU
NC46
G105,S135
8.56
119.1
73.02
EU
NC50
G105,S135
8.56
127.0
90.47
127
5
IEU
NC50
DZ50,R780
10
130.2
90.47
IEU
NC50
G105,S135
9.19
130.2
90.47
139.7
51/2
IEU
51/2FH
G105,S135
9.17
144.5
96.82
168
65/8
IEU
65/8FH
G105,S135
9.19
176.2
135.00
Drilling Machinery,Drilling Tools,Parts Of Drilling Machinery,Fittings Of Drilling Equipment SHIJIAZHUANG LONGXUAN TRADING CO., LTD , https://www.longxuanmachines.com
The impact of the import of international machine tool products on the domestic machine tool industry is not small, which is not conducive to the accelerated transformation of the domestic machine tool industry. Recently, the state's adjustment of foreign-funded enterprises' import and export taxation policies for machine tool casting equipment will reduce the import of machine tool products by foreign-funded enterprises to a certain extent, and ease the import and export deficit.
According to relevant media reports, due to the cold weather of the financial crisis in recent years, the chills around the machine tool equipment foundry industry in China have been difficult to disperse, resulting in a significant drop in the export profits of domestic machine tool casting products. Recently, according to the relevant regulations of the state, adjustments have been made to the policy of tax exemption for foreign-funded enterprises importing machine tool casting equipment. This means that foreign companies that import these equipment will not be able to enjoy the exemption from customs duties and value-added tax as they have in the past. This is an intangible protection for the domestic foundry industry, providing a buffer zone in a fierce market environment.
It is reported that after the adjustment of policies, newly approved foreign-funded projects will be subject to tariffs if they import CNC machine tool foundry products and pressure forming machines listed in the “Not for Tax Exemption from Domestic Capitalâ€. In other words, foreign-funded enterprises can only enjoy the relevant preferential treatment by importing CNC machine tools and pressure forming machines whose domestic existing technologies cannot meet the requirements of the index. This is undoubtedly a rare opportunity for the vigorous development of China's machine tool casting equipment. China's machine tool foundry equipment is in urgent need. Seize the opportunity to promote the better development of domestic machine tool casting equipment.
