What is your warranty policy?

Any questions or problems will be responded to within 12 hours, with lifetime service support.

Can you provide OEM services?

Yes, we finish OEM production within 20-40 days after payment confirmation.

How do you handle product quality control?

All products are calibrated under real working conditions and tested before shipping.

SS304/316L Sanitary Stainless Steel Union Type Sight Glass

Name: SS304/316L Sanitary Stainless Steel Union Type Sight Glass
Brand: QILI HOLDING GROUP CO., LTD.
SKU: 678310232

Zhejiang, ChinaQILI HOLDING GROUP CO., LTD.

US$1.50-5.00

1 Piece

Sample price:US$0.00/piece.Request sample

Product profile

Customization

Available

Certification

3A, SMS. DIN, Rjt

Shape

Round

Model NO.

QL-SG

Head Code

Round

Connection

Welding

Material

Stainless Steel

Size

Dn25-150 & 1"-6"

Seal

Viton, NBR, PTFE, Slilicon

Transport Package

Plywood Case

Specification

DIN, SMS, ISO, IDF, RJT, 3A

Trademark

QL or OEM

Origin

Wenzhou, Zhejiang, China

HS Code

730729000

Production Capacity

10000/Year

Key features

Premium Material Options: Constructed from SS304 or SS316L stainless steel for superior corrosion resistance.

Wide Certification Coverage: Meets 3A, SMS, DIN, RJT, IDF, FDA, and ISO standards for global compliance.

Customizable Sizes: Available in sizes from DN25-150 and 1'-6', with large sizes fully customizable.

Flexible Connection Methods: Supports Welding, Tri Clamp, and Thread (male/female) connections for easy installation.

Low MOQ Policy: Minimum Order Quantity is just 1 piece, suitable for small batch testing.

Lifetime Support Service: Lifetime service commitment with spare parts available at half price.

Company profile

QILI HOLDING GROUP CO., LTD.

Zhejiang, China

Business Type: Manufacturer/FactoryExport Year: 2006-01-01Nearest Port: Ningbo ,Shanghai,Shenzhen,QingdaoAverage Response Time: ≤24hTerms of Payment: LC, T/T, PayPal, etc.International Commercial Terms(Incoterms): FOB, CFR, CIF, EXW

AI-Powered supplier vetting

SummaryQILI HOLDING GROUP CO., LTD. is identified as a China-based manufacturer/factory with facilities in Wenzhou, Zhejiang. The supplied information indicates four production lines, 50 quality-control staff, 11–20 years of combined R&D-engineer experience, and reported annual production of 5,000,000 sanitary valve and fitting pieces. It holds ISO 9001 certification and describes multiple specialized workshops, including CNC machining, forming and polishing, hot forging, BPE fittings, and valve production. The company reports exporting to more than 60 countries since 2006, with exports representing 90% of total sales. It states that it provides design, manufacturing, sales, and after-service capabilities, although detailed after-sales procedures are not provided. Custom fitting production is explicitly mentioned. Available trade data records one transaction and one associated buyer, so customer-case evidence is limited.

Supplier typeThe supplier is explicitly identified as a Manufacturer/Factory and operates in manufacturing from an address in Wenzhou, Zhejiang, China. However, one record also classifies the company nature as a trading company, creating a conflicting secondary classification.

CertificationsThe supplier is explicitly reported to hold ISO 9001 certification, providing direct evidence of a certified quality-management system.

After-Sales capabilityQILI states that its capabilities cover sales and after-service and that it provides service to customers. The slices do not specify service channels, response times, warranty terms, or repair processes, so the stated capability is positive but not operationally detailed.

R&D capabilityThe supplier has 11–20 years of combined R&D-engineer experience and operates specialized workshops including CNC machining, hot forging, and fittings production. These facts support technical development capability, although no specific patented products or quantified R&D achievements are provided.

Production capacityThe supplier reports four production lines, 50 quality-control staff, and annual output of 5,000,000 sanitary valve and fitting pieces. Its described eight professional workshops and stated pre-delivery quality checks provide direct evidence of substantial manufacturing and quality-control capacity.

Customization capabilityThe company explicitly describes an Anhui mass-production base with CNC machining and the ability to make custom fittings. This directly supports customization capability for fitting-related products.

Client casesThe supplier states that its products are exported to more than 60 countries and lists multiple export markets; one associated buyer, LES INSTRUMENTS PITANCO INC, and one trade transaction are also recorded. These references indicate international customer exposure, but the named customer evidence and transaction history are limited.