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3 1/2” 20 Slot Double Layer Stainless Steel Screen | Corrosion Resistant, High Strength, Precise Sand Filtration

Basic Information

Place of Origin:	CHINA
Brand Name:	OASIS
Certification:	GB/T 19001-2016/ISO9001:2015

Minimum Order Quantity:	10 Meter/Meters
Price:	Negotiation
Packaging Details:	Wooden cases or pallet or bundle or container or according to clients' requirements
Delivery Time:	Within 35 days
Payment Terms:	L/C, T/T
Supply Ability:	6000 Meter/Meters per Month

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Shape:	Cylindrical	Surfacefinish:	Polished Or Matte
Unit Length:	0-12m	Slot Size:	0.1mm-50mm
Corrosionresistance:	High	Color:	Bright Gray
Durability:	Long-lasting	Rod:	Can Be Customized
Outer Diameter:	Can Be Customized	Usage:	Liquid Filter

3 1/2” 20 Slot Double Layer Perforated Screen Pipe

Product Overview

The 3 1/2” (88.9mm) 20-slot double-layer perforated screen pipe is a high-reliability sand control solution tailored for complex downhole operations. Featuring a reinforced dual-layer structure consisting of a perforated base pipe and an outer screen jacket, this product balances outstanding structural stability, smooth fluid permeability and precise sand filtration. It is well-suited for vertical wells, deep water wells, oil and gas wells, serving as a durable, cost-effective choice for medium-diameter wellbore sand control and reservoir development projects across the globe.

Structure & Material Configuration

This screen pipe adopts a composite dual-layer structure with premium matched materials to adapt to various harsh downhole environments. The inner base pipe is offered in API-standard carbon steel grades (J55, K55, N80, L80, P110) and corrosion-resistant stainless steel grades (SS304, 304L, 316L). Precision uniform punching processing ensures steady fluid flow while maintaining integral pipe rigidity. The outer protective screen jacket is constructed from 304, 304L or 316L stainless steel with standard 20mm slots. The accurate slot dimension efficiently blocks formation sand and impurities, maximizes flow area, prevents pipeline clogging, and sustains consistent well production efficiency.

Core Advantages

Thanks to the optimized dual-layer structure, this screen pipe boasts far better compression and deformation resistance than traditional single-layer products, effectively resisting formation extrusion in complex downhole conditions. The outer screen jacket provides reliable all-round protection, preventing the inner base pipe from abrasion and damage during running and long-term service, which significantly extends the service life of the pipeline. It supports multiple mainstream thread specifications including EUE, NUE, BTC, STC and LTC, matching perfectly with standard wellbore tubulars for simple, efficient on-site installation. Additionally, the standardized 20mm slot design delivers long-term stable filtration performance, minimizing maintenance frequency and reducing overall operation costs.

Product Specifications

	
			Size:
			3 1/2 inch (88.9mm)
		
			Slot Size:
			20mm
		
			Total Length:
			Customizable from 0 to 12 meters
		
			Base Pipe Material:
			J55, K55, N80, L80, P110, SS304, 304L, 316L
		
			Screen Jacket Material:
			304, 304L, 316L Stainless Steel
		
			Thread Types:
			EUE, NUE, BTC, STC, LTC

Application

Designed for diverse harsh downhole working conditions, this screen pipe features targeted material performance. Carbon steel variants excel in conventional oil and gas wells requiring high pressure resistance, while stainless steel versions are ideal for high-salinity, corrosive downhole environments. It is widely used in onshore and offshore oil wells, gas wells, deep water wells and vertical wells, covering conventional reservoir development, water well filtration and medium-depth well construction. All products are manufactured and inspected in strict accordance with industry standards, delivering stable and trustworthy performance for global well construction projects.

Company Information

As experienced pipe based well screen suppliers, OASIS has more than 15 years of experience and technical expertise in resistance-welded and Profile Bar screens. We offer screens in several configurations and materials, in a wide variety of sizes, shapes and precision openings. The goal of our engineering team is to provide the most efficient screen design for your unique application. We’re always ready to help solve technical problems and assist in designing the most advantageous screen placement.

Compared to other suppliers, OASIS has higher particle removal efficiency, less pressure drop, easier cleaning, and backwash advantages.

3 1/2” 20 Slot Double Layer Stainless Steel Screen | Corrosion Resistant, High Strength, Precise Sand Filtration 1

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3 1/2” 20 Slot Double Layer Stainless Steel Screen | Corrosion Resistant, High Strength, Precise Sand Filtration

Product Overview

Structure & Material Configuration

Core Advantages

Product Specifications

Application

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Size:	3 1/2 inch (88.9mm)
Slot Size:	20mm
Total Length:	Customizable from 0 to 12 meters
Base Pipe Material:	J55, K55, N80, L80, P110, SS304, 304L, 316L
Screen Jacket Material:	304, 304L, 316L Stainless Steel
Thread Types:	EUE, NUE, BTC, STC, LTC

3 1/2” 20 Slot Double Layer Stainless Steel Screen | Corrosion Resistant, High Strength, Precise Sand Filtration

Product Overview

Structure &amp; Material Configuration

Core Advantages

Product Specifications

Application

4 inch well screen,

water well screen pipe,

wedge wire filter

Structure & Material Configuration