API 5L Spiral Heavy Weight Drill Pipe

API 5L Spiral Heavy Weight Drill Pipe.Drill steel tube is hollow, thick-walled piping that transmits drilling fluid and torque through the wellbore to the drill bit on a drilling rig. They are manufactured to withstand severe internal and external pressure, distortion, bending, and vibration as it both rotates and lifts the bottom hole assembly (BHA). Drill Steel Pipe is threaded on each end in a section of pipe referred to as the tool joint. It is manufactured, sampled, tested, and inspected in accordance with standard specifications such as the American Petroleum Institute (API).
Standard drill steel tubes are long tubular sections of pipe that make up the majority of the drill string. They are typically a 31 foot long section of tubular pipe but may be anywhere from 18 to 45 feet in length.
Heavy weight drill steel pipe (HWDP) is a tubular pipe that adds weight or acts as a transitional piece in the drill string. As a transitional section of the drill string, it is placed between the drill collar and standard drill steel pipe to reduce fatigue failures. In other applications the HWDP is used as an additional weight to weigh down the drill string.
Drill collar is a component of the drill string that makes up part of the BHA. They are thicker-walled, heavier, and more rigid than drill pipes and are primarily used to weigh down the drill bit while dampening vibration and impact forces.

1. The main production process of hot-rolled Seamless Steel Pipe (main inspection process):
Tube blank preparation and inspection→tube blank heating→piercing→tube rolling→steel reheating→fixed (reduced) diameter→heat treatment △→finished tube straightening→finishing→inspection (non-destructive, physical and chemical, Taiwan inspection)→warehousing
2. The main production process of cold-rolled (drawn) Seamless Steel Pipes:
Billet preparation→pickling lubrication→cold rolling (drawing)→heat treatment→straightening→finishing→inspection

Our products aye widely used in water engineering,petrochemical industry,chemical industry,electric power industry,agricultural irrigation,urban construction.

Used for liquid conveying:water supply and drainage.For gas transport:gas,steam,liquefier petroleum gas.

For structural use:as pile pipe,as a bridge;Pipes for wharves,roads and building structures.

Q: Are you a manufacturer?
A: Yes , we are a seamless steel pipe  manufacturer, We have own factory, which is located in Shandong,China. We have a leading power in producing and exporting hot rolled seamless steel pipe,cold rolled seamless steel pipe,cold drawn seamless steel pipe and Alloy Seamless Steel Pipe etc. We promise that we are what you are looking for. 
Q:Can we visit your factory ?
A:Warmly welcome once we have your schedule we will pick you up .
Q: Do you have quality control?
A: Yes, we can accept BV, SGS third inspection .
Q: Can you arrange the shipment?
A: Sure, we have permanent freight forwarder who can gain the best price from most ship company and offer professional service.
Q: How long is your delivery time?
A: Generally it is 7-14 days if the goods are in stock. or it is 25-35 days if the goods are not in stock, it is according to quantity.
Q:How can we get the offer?
A:Please offer the specification of the product,such as material,size,shape,etc.So we can give the best offer.
Q:Can we get the some samples?Any charges?
A:Yes,you can get available samples in our stock.Free for real samples,but customers need to pay the freight cost.
Q: How do you make our business long-term and good relationship ?
A: 1.We keep good quality and competitive price to ensure our customers' benefit.
2.We respect every customer as our friend and we sincerely do business and make friends with them, no matter where they come from.