Description

Technical Parameters

Yuanxian High-tech Material Trading (Tianjin) Co., Ltd. is one of the leadnig manufacturers and suppliers of mud rotary drill rig-single-wall casing in China. We provide advanced materials made in China with low price. Welcome to wholesale bulk CE approved mud rotary drill rig-single-wall casing from our factory. Contact us for customized service and free sample.

Casing Construction Equipment

Product Introduction

Material	Core components are mainly made of high-strength alloy steel and wear-resistant manganese steel; steel casings are mostly Q355B/ Q235B carbon structural steel; wear-resistant alloy layers are welded on driving/drilling components for reinforcement.
Meet requirements	As your requirements.
Specifications	As your requirements.
Logo & package	As your requirements.
Other related products	Rotary Drilling Tools, Hydraulic Diaphragm Walling Grab, Rotary Drilling Bits, Continuous Flight Augers, etc.

Product Specification

Parameter	Single-Wall Casing (Forward Circulation)	Double-Wall Casing (Reverse Circulation)
Fluid supply path	Inside casing / drill pipe	Annulus between inner & outer casings
Cuttings return path	Annulus (casing OD to borehole wall)	Inside inner casing
Fluid velocity at bit	High (good cleaning)	Moderate
Cuttings lift velocity	Moderate (annular velocity)	High (in inner pipe)
Formation fluid invasion	Moderate to High	Minimal
Sample contamination risk	Moderate (cuttings can be re-ground)	Low
Borehole wall erosion	Moderate (annular flow)	Minimal

Diameter	Effective length L						Wall thickness	Wall thickness	Total wall thickness	Number
D1/D2	1m	2m	3m	4m	5m	6m	a1	a2	t2	bolt
(mm)	Weight (Kg) Parts Number						(mm)	(mm)	(mm)	(Nos)
620/540	403	739	1074	1411	1747	2081	12	8	40	8
750/670	492	902	1311	1722	2131	2540	12	8	40	10
880/800	585	1069	1552	2036	2520	3005	12	8	40	10
1000/920	669	1221	1773	2328	2877	3429	12	8	40	10
1180/1100	844	1580	2316	3052	3787	4522	16	8	40	12
1200/1120	872	1620	2370	3120	3870	4620	16	8	40	12
1300/1220	933	1746	2558	3372	4184	4996	16	8	40	12
1500/1400	1433	2628	3817	5009	6210	7393	20	10	50	12
1800/1700	1730	3166	4602	6038	7474	8910	20	10	50	12
2000/1880	2450	4280	6110	7940	9770	11600	20	15	60	12
2200/2080	2700	4720	6740	8760	10780	12800	20	15	60	12
2500/2380	2960	5240	7520	9800	12080	14360	20	15	60	16

Double-walled casing

The Double-Walled Casing (also known as Dual-Wall Casing or Concentric Casing System) is a specialized drilling accessory consisting of two concentric steel pipes-an outer casing and an inner casing-assembled as a single integrated unit. This design creates an annular space between the two pipes, which serves as a dedicated flow path for drilling fluids, air, or foam, while the inner pipe functions as the primary conduit for cuttings return, core retrieval, or tool deployment.

Diameter	Effective length L						Wall thickness	Wall thickness	Number
D1/D2	1m	2m	3m	4m	5m	6m	T	B	bolt
(mm)	Weight (Kg) Parts Number						(mm)	(mm)	(Nos)
620/540	380	672	993	1255	1546	1838	14	40	8
750/670	447	789	1131	1473	1815	2157	14	40	10
880/800	514	906	1298	1690	2082	2474	16	40	10
1000/920	580	1022	1464	1906	2348	2790	16	40	10
1180/1100	740	1233	1826	2350	2800	3105	16	40	12
1200/1120	800	1350	1900	2550	3100	3500	16	40	12
1300/1220	845	1475	2105	2735	3365	3995	16	40	12
1500/1400	1310	2220	3130	4040	4950	5860	25	50	12
1800/1700	1580	2675	3770	4865	5960	7055	25	50	12
2000/1880	2140	3355	4570	5785	7000	8215	25	60	12
2200/2080	2350	3690	5030	6370	7710	9050	25	60	12
2500/2380	2575	4100	5625	7150	8675	10200	25	6

Product Details

No mud conditioning required, eco-friendly construction; adaptable to complex and easy-collapse formations with high hole-forming precision; simplified working procedures, high construction efficiency, and reduced construction accidents such as hole collapse and diameter reduction.

Production Applications

Easy-collapse formations such as muddy clay and loose miscellaneous fill; easy-slurry-loss formations such as sandy cobble and permeable layers; pile foundation projects with high requirements for construction precision and environment such as karst landforms and dense urban building areas.

Certificate

Our Prestressed anchorage have CE, SGS, ISO Certificates.

Packaging And Delivery

Packing: As your requirements.

We support customized package:

1) All the products are packed with seaworthy packing.
2) Customer's special requirement for packing can be satisfied.
3) Air freight; sea freight and truck freight are all available.

FAQ

1. What is your delivery time?

We offer fast delivery: stock items ship in 7-15 days, while custom orders typically take 15-30 workdays, depending on your specific quantity.

2. How do you guarantee product quality?

Quality is verified through Mill Test Certificates (MTC) included with every shipment, and we fully support third-party inspections for your peace of mind.

3. Are there any hidden costs?

No. Our quotations are transparent and all-inclusive, ensuring you won't encounter any unexpected or additional fees.

4. Do you provide samples?

Yes, we provide samples for a nominal fee of $1; you just need to cover the freight cost to evaluate our quality firsthand.

5. What payment terms do you accept?

We accept T/T at sight and L/C, as well as Cash and Western Union. Please contact us if you require alternative arrangements.

6. What is your MOQ?

Our standard MOQ is usually one container, but we offer flexibility for specific items; please get in touch to discuss your requirements.

7. Can you produce according to my drawing?

Absolutely. We specialize in OEM and custom manufacturing, and our engineering team can produce exact specifications based on your drawings.

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Mud Rotary Drill Rig-Single-wall Casing