What is the warranty policy for your products?

We respond to any issues within 12 hours. Spare parts are available at half price for lifetime service, and we offer repair services if local resolution fails.

What products do you supply besides the sight glass?

We supply sanitary butterfly valves, check valves, diaphragm valves, tank accessories, strainers, cleaning balls, and various pipe fittings.

How do you ensure product quality?

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

Sanitary Stainless Steel Union Type Round Weld Tank Sight Glass

Name: Sanitary Stainless Steel Union Type Round Weld Tank Sight Glass
Brand: QILI HOLDING GROUP CO., LTD.
SKU: 831561955

Zhejiang, ChinaQILI HOLDING GROUP CO., LTD.

US$1.50-5.00

1 Piece

Product profile

Customization

Available

Shape

Round

Connection

Welding

Material

Stainless Steel

Size

Dn25-100 & 1"-4"

Is Customized

Yes

Material Type

SS304/SS316L

Standard

DIN, SMS, ISO, 3A

Transport Package

Plywood Case

Specification

Dn25-100 & 1"-4"

Trademark

QL or OEM

Origin

Wenzhou, Zhejiang, China

Production Capacity

10000/Year

Key features

Customizable Size Range: Available in sizes from DN25 to DN150 and 1 inch to 4 inches to fit various equipment.

Premium Material Options: Constructed from SS304 or SS316L stainless steel for durability and hygiene.

Versatile Connection Types: Supports Tri-Clamped, Threaded, Welding, and Flanged connections for easy installation.

Multiple Industry Applications: Ideal for brewery, dairy, food, cosmetic, and bio-pharmaceutical processing.

FDA and 3A Compliance: All materials meet FDA, ISO, and 3A certification requirements for safety.

Durable Glass Material: Features tempered glass sight glass for clear visibility and long service life.

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.