Class 900
Class 900
Class 900
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  • Class 900
  • Class 900
  • Class 900

Class 900

Suitable for Class 900 high‑pressure process pipelines, for plant maintenance, system isolation and process switching conditions. It enables visual open‑closed status indication, effectively blocks medium flow, and ensures safety for equipment maintenance and pipeline pressure‑testing operations.

Category:

Spectacle Blind

Email:

lipeng@dongjunpipe.com

WhatsApp:

8613121803826

Request a Quote
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Product Model

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Description

  • 产品描述

  • Product Parameters 

    Item Parameter
    Type spectacle blind
    Nominal Diameter NPS 4"（DN100
    Pressure Class Class 900
    Sealing Face Type RTJ Ring-Joint Face, Groove Type R37
    Material ASTM A105 LF2 Low-Temperature Carbon Steel Forging
    Applicable Standard ASME B16.5
    Applicable Working Conditions High-pressure and low-temperature oil-gas, refining and natural gas projects (RTJ metal seal is preferred for high-pressure service)

FAQs

Basic info about your pipe fitting factory, establishment year and location?

Cangzhou Dongjun Pipe was founded in 2000, located in Buzhai Industrial Zone, Mengcun — China’s well-known capital of elbows and pipe fittings. We enjoy convenient transport near Huanghua Port, Beijing and Tianjin. Our annual production capacity reaches 20,000 tons, with 230 employees including 45 professional technical engineers. Factory visits are welcome.

What main pipe fitting products can you provide?

We manufacture high, medium and low pressure steel pipeline components. Main products include flanges, elbows, tees, reducers, socket weld inserts, nozzles and pipe supports. We have more than 1000 specifications covering mainstream pipeline accessories to realize one-stop procurement.

What metal materials are available for your pipe fittings?

We supply carbon steel, alloy steel, stainless steel, duplex steel and nickel-based alloy to fit different temperature, pressure and corrosion environments. If you need special custom metal materials for special working conditions, our technical team can also meet your requirements.

Which international standards do your products comply with?

Our products support GB, ASME, DIN and JIS standards. Every batch of goods can be matched with EN10204:2004 official test reports, which are widely recognized by engineering supervisors in global projects.

How do you control product quality before delivery?

We own over 200 sets of professional production and testing equipment, including full NDT devices, spectrometers and mechanical testing machines. Raw material inspection, semi-finished product testing and finished product full inspection will be completed strictly before shipment to avoid defective goods.

What certifications does your factory hold for project bidding?

We have ISO9001/14001/45001 system certificates, API Spec Q1 10th Edition certificate and China Special Equipment Manufacturing License for pressure pipeline components. All valid certificates can be provided for your tender review at any time.

 

Qualification

Class 900

Suitable for Class 900 high‑pressure process pipelines, for plant maintenance, system isolation and process switching conditions. It enables visual open‑closed status indication, effectively blocks medium flow, and ensures safety for equipment maintenance and pipeline pressure‑testing operations.

Email:

lipeng@dongjunpipe.com

WhatsApp:

8613121803826

OUR SERVICE

We offers a wealth of product support resources, including a range of technical and downloadable product manuals to product certifications.

Our Service Product Catalog

COMPANY STRENGTHS

Experience

26 years of professional pipe fittings production and customization experience, with 45 senior technical engineers to support project development.

OEM/ODM

Full support OEM & ODM customization. We produce carbon/alloy/stainless steel fittings with 1000+ specs complying with GB, ASME, DIN, JIS standards.

Reliable Quality

Strict raw material selection & full-process inspection. Our lab equips complete devices for chemical analysis, mechanical test and NDT.

Certification

Possess full authoritative qualifications: ISO triple system, API Spec Q1, national pressure pipeline manufacturing license, EN10204 test certificates available.

Export

Located in Mengcun pipe fittings hub adjacent to Huanghua Port. Products cover all China provinces and export to Southeast Asia, Middle East, South America and more.

Advanced Equipment & Tech

200+ sets of advanced forging, CNC machining and full inspection equipment, annual output reaches 20,000 tons of high-pressure pipe fittings.

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