3.125 Inch Pipe Thread Protectors

3.125 Inch (3-1/8 Inch) Plastic Pipe Thread Protectors — Drawing-Based Fit

Features and selection of plastic thread protectors:
1. Match thread coverage and engagement length to the pipe-end drawing
2. Specify storage temperature, sunlight exposure and handling conditions for resin selection
3. Plastic construction; steel-reinforced composite protectors require a separate specification
4. Specify size, connection identification and marking requirements with the order
5. Confirm installation and removal method against the approved sample
6. Identify the exact connection designation, thread pitch and taper; size alone does not define fit
7. Specify pin or box end and required coverage of threads and sealing surfaces
8. Check protector fit against the particular pipe connection rather than steel grade alone
9. Define impact and contamination-protection requirements; this protector is not a pressure plug
10. Include storage duration and inspection requirements in the purchase specification
11. Provide connection drawings for proprietary threads; compatibility requires dimensional review

This plastic thread protector is listed as 3.125 inch (3-1/8 inch). Confirm whether that measurement identifies the pipe outside diameter, protector diameter or another drawing dimension before ordering. It is intended to protect pipe-end threads during transport and storage.

For a fit review, provide the pipe-end drawing, pin or box designation, thread pitch, taper, engagement length and any sealing-surface coverage requirement. A 3.125 inch measurement alone is insufficient to identify the connection.

Plastic protectors and metal-plastic composite protectors are different constructions. Specify the required resin and any reinforcement rather than assuming the steel construction described for a composite model applies to this plastic listing.

Before reuse, inspect threads, cracks, deformation and contamination. Reuse depends on condition and the applicable handling procedure; recycling depends on the identified resin and local facilities.

Select plastic or composite construction according to handling loads, storage exposure and the required protection level. Price and suitability depend on the confirmed design and quantity.
Other sizes in the existing range: 2-3/8, 2-7/8, 3-1/2, 4, 4-1/2, 5, 5-1/2, 6-5/8, 7, 7-5/8, 8-5/8, 9-5/8, 10-3/4, 11-3/4, 13-3/8, 16 and 20 inch. Connection references include NC26, NC38, NC50, 4-1/2 Reg, 3-1/2 Reg, 6-5/8 Reg, 7-5/8 Reg, BTC, STC and LTC. These are separate size and connection options, not interchangeable versions of the 3.125 inch protector. Confirm each required drawing.

Packaging & Shipping

Other oil and gas industry accessories for choice:

1: Kinds of Swab cups: TA types, MV Types, V types, TUF types ect.

2: Hammer union seals: 1" 1.5" 2" 3" 4" inches hammer uinon seals, rubber types and Brass or Stainless Back-up types.

3: Kinds of oil saver packers, tubing test cups ect

About Shanghai Qinuo Industry:

Shanghai Qinuo Industry provides custom plastic, rubber and machined parts for industrial applications.
For this protector, drawing review and sample fit checks help establish thread engagement, coverage and installation requirements.
Send the connection drawing, resin preference, quantity and marking requirements for manufacturing review.
The company operates an ISO 9001 quality management system. Product-specific test reports or conformity requirements should be specified with the order.

Custom inquiries can include an original sample and dimensioned drawing. Identify the 3.125 inch measurement and the mating connection before tooling approval.