S & D Fasteners Co., LTD are producing better Self-Drilling Screws, which are the most convenient, cost-saving and reliable fastener for use. S&D self-drilling Screws has a hardened drill point that will help to drill fast and thread tapping well in structural steel and mild steel. Our high speed drilling point dies are using designed in a manner much the same as high speed steel drill bits.
Our self-drilling screws have following Benefits:
(1) Thrunder Drill Points are easy to start and keep steady on metal surface without sliding.
(2) High quality screws with a sharp edge that increase the speed of drilling the material.
(3) Drilling Points as high performance drill bit to allow faster drill feed rates and easy to remove the scrap.
We offer a comprehensive range of anchors and equipment to suit a wide variety of situations in the ground engineering and construction industries. Below are our fields of expertise:
Anti-corrosion Rock Bolt
Fast Anchor Bolt
These rock bolts are available in a range of sizes and lengths. Also some products can be customized according to customer’s demand. As a rapid and cost-effective solution, the bolts and equipment can be used in a wide variety of projects, such as tunneling support, hydroelectric station, soil nailing, micro piles, mining, and others.
1. Drilling tools used in open-pit blasting
2. Drilling tools for underground mining
3. Drilling tools for anchoring and shoring
4. Drilling tools for deep hole and super deep hole drilling
5. casing drilling tools
6. Reverse circulation hammers
1. Drill bits under low air pressure
2. Drill bits under high air pressure
3. Drill Bits under high pressure
4. Drill Bits under Low Pressure
5. Specially used drill bits
Rock drilling accessories
1. Button bits
2. Shank adapters and coupling sleeve
1. Overburden (ODEX)casing system
2. Symmetrix overburden casing system
Parts of drill rigs
Special related products as customers requirements
Our main products
A.straight and taper shank twist drill ,multi-functional carbide tipped straight shank twist drill .HSS hole saw ,TCT hole saw , Bi-metal hole saw ,glass hole saw ,marble hole saw ,hammer drill ,masonry drill ,auger bit ,wood flat bit ,chisel ,diamond disc ,TCT circular saw blade ,screwdriver bit ,magnetic nut setter and other hardware tools etc
B.new type coal drill rod applied to weak rock drilling; high efficiency spiral drill rod applied to anti-explosion within the scope of 100meters; light type gas-discharging drill rod; geological drill rod adopting the craft of friction welding with alloy-steel pipe; Geological spiral drill rod and prismatic drill rod applied to soft coal seam; small diameter anchor rod and horizontal anchor rod applied to roadway support.
Besides, PDC drill bit, hard alloy drill bit, coal rock drill, DTH bit, picks and other drill bits have been widely used in coal mining, mine exploration, railroad construction, tunnel construction and so on.
C.B16 steel;304 and 316 stainless steel of bolts;threaded studs;nuts screws;washers;self-drilling screws;rivets;punched anchors;clamps etc.
KLA DING persist in keeping that quality, efficiency and service is the growing root of our enterprise.
With good management and high quality products; effective and humanized service; we aim to let all of our friends & customers get greater value in order to create a co-development and win-win situation in future.
Longyue Was established in 1998,located in Cangzhou which is in the industrial zone of Cangzhou city ,and enjoys good location and convenient transportation.Longyue specializes in water well drill bits,oil well drilling bits ,like: Tricone Bits (Steel tooth & TCI bit),Tri-cone Bit, Three cone bit,Tricone Drill bit,tungsten cabide inserted bits, Tricone rock bit, Milled tooth bit, Roller Cone Bits ,matrix body PDC bits, steel body PDC bit, Reamer bit, drill pipe, drill collars, engineering bits, stabilizers, for water well ,oil field, construction and underground foundation work all over the world. All of our products are in accord with API and ISO standards.