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Many of our dresses feature beautiful beading on the sleeves

2018-07-16
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While we work with a range of industries, we specialize in providing machining services to clients in the oil & gas industry. Our shop is proudly ISO 9001:2015 certified, and we have the equipment to handle heavy-duty and high-precision projects. No matter the size or scope of your oil & gas project, our team will always work to meet the highest quality standards.
OUR MISSION
PRIORITIZE CLEAR COMMUNICATION AND COLLABORATION
As a large, privately-owned and operated machine shop, we prioritize clear communication and collaboration with our clients to ensure we find the right solution, the first time. From prototype to production, we know establishing a relationship with our clients and clearly understanding their unique needs are of the utmost importance. With our machining expertise and your industry knowledge -- together we will create the solution you need.
Trust Tianjin Grand to take your project from concept to reality, we are dedicated to providing agile, cost-effective and high-quality solutions for every client, every time.
OIL & GAS PRODUCTS
We manufacture various oil & gas drilling tools for some of the most prominent players in the industry. Specializing in precision machined tools, Tianjin Grand  is your solutions and products provider for your oil & gas industry needs.
What we offer:
1. PDC BIt
1. PDC BIt
PDC Bit
PDC bit is short for Polycrystalline Diamond Compact bit. The other name for the PDC bit is Diamond bit. As one of the most professional PDC drill bits manufacturers in China, Great bits design and manufacture a wide variety of Matrix body PDC bit and Steel body PDC bit. Our PDC bits are offered in a variety of sizes, blade count, and cutter sizes.
PDC Bit Classification by Material:
According to the production material, the PDC drill bits for sale on the current market can be roughly divided into the following two types:
Matrix body PDC bit: This type of diamond PDC bit is made of tungsten carbide powder, and the gauge protection is TSP.
Steel body PDC bit: With the AISI 4145H heat treatment steel (America standard steel ), the steel body PDC bit can be used for high-quality CNC machines milling pockets, blade, nozzles.
Most of the raw material Grand uses for our diamond PDC bit is made in USA and France. Our supplier technical engineers will come to our factory to train our welder and have meetings with us so as to show their new products regularly. We communicate with our supplier very well. So if our customers need, we can ask our engineer have a meeting with each other face to face.
PDC Bit Classification by Application:
Mining Industry
There are some 3-blade PDC bits mainly used for the mining industry in Australia,and Russia. The formation is very soft. Choosing a Steel body PDC bit can saving more drilling costs.
Water well drilling
Having higher ROP, diamond PDC bits are also widely used as water well drill bits for geothermal drilling.
Oil & Gas drilling
- Polycrystalline diamond compact bit is the most widely used bit in the field of Oil &Gas drilling. Hydraulic factors are very important to the bit during drilling.
- PDC bits have been used in areas that were previously unavailable, such as harder, more abrasive, and more variable formations.
- This expansion into the new field has a great impact on the balance between the diamond (fixed cutter bit) bit and Tricone bit.
- The diamond PDC bit is mainly composed of the bit body, cutting teeth, nozzles, gauge protection, and API Thread connection.
If your drilling has any problem, GRAND can provide a solution and service.
2. Pertroleum tri-cone bit
1. PDC BIt

Type: 8 3/4'' 637
IADC: 637
WOB（KN/mm）: 0.5~1.1
RPM（r/mim）: 180~40
THREAD: 4 1/2' API REG
Application formation: It is suitable for hard formations with high compressive strength such as sandstone, limestone, dolomite, anhydrite, and marble.
  The upper limit of the WOB and speed recommended in the table cannot be used at the same time.
3. Seamless steel pipe (SMLS)
1. PDC BIt

Seamless steel pipe (SMLS)
Size range: 1 " nominal through 36 "OD
Wall Thickness up through 4 " thick
Specifications & Grades: PI 5L / A53 /A106 GRADE B & X-Grades through X-80
API 5CT H40, J55, N80(-1/-Q), L80, P110, T95d , C90d
We also can supply ERW steel pipe
Size range: 1/2 " nominal through 24 "OD
Wall Thickness up through 1" thick
Steel materila according to client inquiry